80312931 has 8 divisors (see below), whose sum is σ = 118982160. Its totient is φ = 53541936.

The previous prime is 80312929. The next prime is 80312933. The reversal of 80312931 is 13921308.

It is an interprime number because it is at equal distance from previous prime (80312929) and next prime (80312933).

It is not a de Polignac number, because 80312931 - 2¹ = 80312929 is a prime.

It is a super-2 number, since 2×80312931² = 12900333771621522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2974553 = 80312931 / (8 + 0 + 3 + 1 + 2 + 9 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 80312895 and 80312904.

It is not an unprimeable number, because it can be changed into a prime (80312933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1487250 + ... + 1487303.

It is an arithmetic number, because the mean of its divisors is an integer number (14872770).

Almost surely, 2^80312931 is an apocalyptic number.

80312931 is a deficient number, since it is larger than the sum of its proper divisors (38669229).

80312931 is a wasteful number, since it uses less digits than its factorization.

80312931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2974562 (or 2974556 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 80312931 is about 8961.7482111472. The cubic root of 80312931 is about 431.4480315446.

The spelling of 80312931 in words is "eighty million, three hundred twelve thousand, nine hundred thirty-one".