31368261868 has 6 divisors (see below), whose sum is σ = 54894458276. Its totient is φ = 15684130932.

The previous prime is 31368261851. The next prime is 31368261877. The reversal of 31368261868 is 86816286313.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3921032730 + ... + 3921032737.

Almost surely, 2^31368261868 is an apocalyptic number.

It is an amenable number.

31368261868 is a deficient number, since it is larger than the sum of its proper divisors (23526196408).

31368261868 is a wasteful number, since it uses less digits than its factorization.

31368261868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7842065471 (or 7842065469 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 52.

The spelling of 31368261868 in words is "thirty-one billion, three hundred sixty-eight million, two hundred sixty-one thousand, eight hundred sixty-eight".