31920606670 has 32 divisors (see below), whose sum is σ = 61887703680. Its totient is φ = 11814919200.

The previous prime is 31920606667. The next prime is 31920606691. The reversal of 31920606670 is 7660602913.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1945356 + ... + 1961695.

It is an arithmetic number, because the mean of its divisors is an integer number (1933990740).

Almost surely, 2^31920606670 is an apocalyptic number.

31920606670 is a deficient number, since it is larger than the sum of its proper divisors (29967097010).

31920606670 is a wasteful number, since it uses less digits than its factorization.

31920606670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3907120.

The product of its (nonzero) digits is 81648, while the sum is 40.

The spelling of 31920606670 in words is "thirty-one billion, nine hundred twenty million, six hundred six thousand, six hundred seventy".