80831751 has 48 divisors (see below), whose sum is σ = 145861632. Its totient is φ = 38744640.

The previous prime is 80831747. The next prime is 80831761. The reversal of 80831751 is 15713808.

It is not a de Polignac number, because 80831751 - 2² = 80831747 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80831741) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31810 + ... + 34256.

It is an arithmetic number, because the mean of its divisors is an integer number (3038784).

Almost surely, 2^80831751 is an apocalyptic number.

80831751 is the 7341-st pentagonal number.

80831751 is a deficient number, since it is larger than the sum of its proper divisors (65029881).

80831751 is a wasteful number, since it uses less digits than its factorization.

80831751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492 (or 2481 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 80831751 is about 8990.6479744232. The cubic root of 80831751 is about 432.3750868285.

The spelling of 80831751 in words is "eighty million, eight hundred thirty-one thousand, seven hundred fifty-one".