312140931 has 8 divisors (see below), whose sum is σ = 417930240. Its totient is φ = 207222792.

The previous prime is 312140923. The next prime is 312140971. The reversal of 312140931 is 139041213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 312140931 - 2³ = 312140923 is a prime.

It is a super-2 number, since 2×312140931² = 194863921611093522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (312140971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216955 + ... + 218388.

It is an arithmetic number, because the mean of its divisors is an integer number (52241280).

Almost surely, 2^312140931 is an apocalyptic number.

312140931 is a deficient number, since it is larger than the sum of its proper divisors (105789309).

312140931 is a wasteful number, since it uses less digits than its factorization.

312140931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435585.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 312140931 is about 17667.5106056286. The cubic root of 312140931 is about 678.3443943459.

The spelling of 312140931 in words is "three hundred twelve million, one hundred forty thousand, nine hundred thirty-one".