31013697 has 48 divisors (see below), whose sum is σ = 50174208. Its totient is φ = 16885440.

The previous prime is 31013677. The next prime is 31013701. The reversal of 31013697 is 79631013.

It is not a de Polignac number, because 31013697 - 2⁷ = 31013569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31013677) 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 47 ways as a sum of consecutive naturals, for example, 373618 + ... + 373700.

It is an arithmetic number, because the mean of its divisors is an integer number (1045296).

Almost surely, 2^31013697 is an apocalyptic number.

It is an amenable number.

31013697 is a deficient number, since it is larger than the sum of its proper divisors (19160511).

31013697 is a wasteful number, since it uses less digits than its factorization.

31013697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 31013697 is about 5568.9942539026. The cubic root of 31013697 is about 314.1843245459.

The spelling of 31013697 in words is "thirty-one million, thirteen thousand, six hundred ninety-seven".