31572109132 has 6 divisors (see below), whose sum is σ = 55251190988. Its totient is φ = 15786054564.

The previous prime is 31572109097. The next prime is 31572109133. The reversal of 31572109132 is 23190127513.

It is not an unprimeable number, because it can be changed into a prime (31572109133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3946513638 + ... + 3946513645.

Almost surely, 2^31572109132 is an apocalyptic number.

It is an amenable number.

31572109132 is a deficient number, since it is larger than the sum of its proper divisors (23679081856).

31572109132 is a wasteful number, since it uses less digits than its factorization.

31572109132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7893027287 (or 7893027285 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 34.

The spelling of 31572109132 in words is "thirty-one billion, five hundred seventy-two million, one hundred nine thousand, one hundred thirty-two".