31936556968 has 8 divisors (see below), whose sum is σ = 59881044330. Its totient is φ = 15968278480.

The previous prime is 31936556959. The next prime is 31936556969. The reversal of 31936556968 is 86965563913.

It can be written as a sum of positive squares in only one way, i.e., 17072558244 + 14863998724 = 130662^2 + 121918^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (31936556969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1996034803 + ... + 1996034818.

Almost surely, 2^31936556968 is an apocalyptic number.

It is an amenable number.

31936556968 is a deficient number, since it is larger than the sum of its proper divisors (27944487362).

31936556968 is a wasteful number, since it uses less digits than its factorization.

31936556968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3992069627 (or 3992069623 counting only the distinct ones).

The product of its digits is 31492800, while the sum is 61.

The spelling of 31936556968 in words is "thirty-one billion, nine hundred thirty-six million, five hundred fifty-six thousand, nine hundred sixty-eight".