31252571642 has 16 divisors (see below), whose sum is σ = 46982073600. Its totient is φ = 15591912960.

The previous prime is 31252571633. The next prime is 31252571659. The reversal of 31252571642 is 24617525213.

It is a junction number, because it is equal to n+sod(n) for n = 31252571596 and 31252571605.

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, 2248109 + ... + 2261967.

It is an arithmetic number, because the mean of its divisors is an integer number (2936379600).

Almost surely, 2^31252571642 is an apocalyptic number.

31252571642 is a deficient number, since it is larger than the sum of its proper divisors (15729501958).

31252571642 is a wasteful number, since it uses less digits than its factorization.

31252571642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16261.

The product of its digits is 100800, while the sum is 38.

The spelling of 31252571642 in words is "thirty-one billion, two hundred fifty-two million, five hundred seventy-one thousand, six hundred forty-two".