31097312542 has 16 divisors (see below), whose sum is σ = 46723083264. Its totient is φ = 15522975000.

The previous prime is 31097312527. The next prime is 31097312557. The reversal of 31097312542 is 24521379013.

It is an interprime number because it is at equal distance from previous prime (31097312527) and next prime (31097312557).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3393667 + ... + 3402817.

It is an arithmetic number, because the mean of its divisors is an integer number (2920192704).

Almost surely, 2^31097312542 is an apocalyptic number.

31097312542 is a deficient number, since it is larger than the sum of its proper divisors (15625770722).

31097312542 is a wasteful number, since it uses less digits than its factorization.

31097312542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11775.

The product of its (nonzero) digits is 45360, while the sum is 37.

The spelling of 31097312542 in words is "thirty-one billion, ninety-seven million, three hundred twelve thousand, five hundred forty-two".