312431051 has 4 divisors (see below), whose sum is σ = 322509504. Its totient is φ = 302352600.

The previous prime is 312431039. The next prime is 312431087. The reversal of 312431051 is 150134213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312431051 is a prime.

It is a super-2 number, since 2×312431051² = 195226323257929202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312331051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5039180 + ... + 5039241.

It is an arithmetic number, because the mean of its divisors is an integer number (80627376).

Almost surely, 2^312431051 is an apocalyptic number.

312431051 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

312431051 is a deficient number, since it is larger than the sum of its proper divisors (10078453).

312431051 is a wasteful number, since it uses less digits than its factorization.

312431051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10078452.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 312431051 is about 17675.7192498636. The cubic root of 312431051 is about 678.5544921097.

Adding to 312431051 its reverse (150134213), we get a palindrome (462565264).

The spelling of 312431051 in words is "three hundred twelve million, four hundred thirty-one thousand, fifty-one".