# 81445311

## 81,445,311 is an odd composite number composed of five prime numbers multiplied together.

What does the number 81445311 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 64 divisors.

81445311 is an odd composite number. It is composed of five distinct prime numbers multiplied together. It has a total of sixty-four divisors.

## Prime factorization of 81445311:

### 33 × 29 × 41 × 43 × 59

(3 × 3 × 3 × 29 × 41 × 43 × 59)

See below for interesting mathematical facts about the number 81445311 from the Numbermatics database.

### Names of 81445311

• Cardinal: 81445311 can be written as Eighty-one million, four hundred forty-five thousand, three hundred eleven.

### Scientific notation

• Scientific notation: 8.1445311 × 107

### Factors of 81445311

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 175

### Divisors of 81445311

• Number of divisors d(n): 64
• Complete list of divisors:
• Sum of all divisors σ(n): 133056000
• Sum of proper divisors (its aliquot sum) s(n): 51610689
• 81445311 is a deficient number, because the sum of its proper divisors (51610689) is less than itself. Its deficiency is 29834622

### Bases of 81445311

• Binary: 1001101101011000001101111112
• Base-36: 1CHNLR

### Squares and roots of 81445311

• 81445311 squared (814453112) is 6633338683886721
• 81445311 cubed (814453113) is 540254332077484680615231
• The square root of 81445311 is 9024.7055907659
• The cube root of 81445311 is 433.4663232181

### Scales and comparisons

How big is 81445311?
• 81,445,311 seconds is equal to 2 years, 30 weeks, 4 days, 15 hours, 41 minutes, 51 seconds.
• To count from 1 to 81,445,311 would take you about three years!

This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 81445311 cubic inches would be around 36.1 feet tall.

### Recreational maths with 81445311

• 81445311 backwards is 11354418
• 81445311 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 81445311's digits is 27
• More coming soon!