31652868818 has 32 divisors (see below), whose sum is σ = 49791006720. Its totient is φ = 15079055760.

The previous prime is 31652868811. The next prime is 31652868851. The reversal of 31652868818 is 81886825613.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31652868811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 543533 + ... + 598943.

It is an arithmetic number, because the mean of its divisors is an integer number (1555968960).

Almost surely, 2^31652868818 is an apocalyptic number.

31652868818 is a deficient number, since it is larger than the sum of its proper divisors (18138137902).

31652868818 is a wasteful number, since it uses less digits than its factorization.

31652868818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55622.

The product of its digits is 4423680, while the sum is 56.

The spelling of 31652868818 in words is "thirty-one billion, six hundred fifty-two million, eight hundred sixty-eight thousand, eight hundred eighteen".