31564016642 has 16 divisors (see below), whose sum is σ = 48080451552. Its totient is φ = 15537471840.

The previous prime is 31564016639. The next prime is 31564016713. The reversal of 31564016642 is 24661046513.

It is a junction number, because it is equal to n+sod(n) for n = 31564016596 and 31564016605.

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, 167717 + ... + 302087.

It is an arithmetic number, because the mean of its divisors is an integer number (3005028222).

Almost surely, 2^31564016642 is an apocalyptic number.

31564016642 is a deficient number, since it is larger than the sum of its proper divisors (16516434910).

31564016642 is a wasteful number, since it uses less digits than its factorization.

31564016642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136193.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 31564016642 in words is "thirty-one billion, five hundred sixty-four million, sixteen thousand, six hundred forty-two".