31324157864 has 16 divisors (see below), whose sum is σ = 58753183200. Its totient is φ = 15656642352.

The previous prime is 31324157831. The next prime is 31324157867. The reversal of 31324157864 is 46875142313.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31324157867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 655034 + ... + 701225.

It is an arithmetic number, because the mean of its divisors is an integer number (3672073950).

Almost surely, 2^31324157864 is an apocalyptic number.

It is an amenable number.

31324157864 is a deficient number, since it is larger than the sum of its proper divisors (27429025336).

31324157864 is a wasteful number, since it uses less digits than its factorization.

31324157864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359152 (or 1359148 counting only the distinct ones).

The product of its digits is 483840, while the sum is 44.

The spelling of 31324157864 in words is "thirty-one billion, three hundred twenty-four million, one hundred fifty-seven thousand, eight hundred sixty-four".