31345968 has 40 divisors (see below), whose sum is σ = 82865728. Its totient is φ = 10204992.

The previous prime is 31345967. The next prime is 31345969. The reversal of 31345968 is 86954313.

It is an interprime number because it is at equal distance from previous prime (31345967) and next prime (31345969).

It is not an unprimeable number, because it can be changed into a prime (31345967) 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, 5530 + ... + 9657.

Almost surely, 2^31345968 is an apocalyptic number.

It is an amenable number.

31345968 is an abundant number, since it is smaller than the sum of its proper divisors (51519760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31345968 is a wasteful number, since it uses less digits than its factorization.

31345968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15241 (or 15235 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 31345968 is about 5598.7470026784. The cubic root of 31345968 is about 315.3023652506.

The spelling of 31345968 in words is "thirty-one million, three hundred forty-five thousand, nine hundred sixty-eight".