312340431 has 16 divisors (see below), whose sum is σ = 454809600. Its totient is φ = 189500640.

The previous prime is 312340397. The next prime is 312340447. The reversal of 312340431 is 134043213.

It is not a de Polignac number, because 312340431 - 2⁹ = 312339919 is a prime.

It is a super-2 number, since 2×312340431² = 195113089674531522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312340398 and 312340407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312340331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53631 + ... + 59168.

It is an arithmetic number, because the mean of its divisors is an integer number (28425600).

Almost surely, 2^312340431 is an apocalyptic number.

312340431 is a deficient number, since it is larger than the sum of its proper divisors (142469169).

312340431 is a wasteful number, since it uses less digits than its factorization.

312340431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112886.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 312340431 is about 17673.1556604926. The cubic root of 312340431 is about 678.4888813091.

Adding to 312340431 its reverse (134043213), we get a palindrome (446383644).

The spelling of 312340431 in words is "three hundred twelve million, three hundred forty thousand, four hundred thirty-one".