31831763268 has 12 divisors (see below), whose sum is σ = 74274114320. Its totient is φ = 10610587752.

The previous prime is 31831763267. The next prime is 31831763281. The reversal of 31831763268 is 86236713813.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×31831763268² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31831763267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1326323458 + ... + 1326323481.

Almost surely, 2^31831763268 is an apocalyptic number.

It is an amenable number.

31831763268 is an abundant number, since it is smaller than the sum of its proper divisors (42442351052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31831763268 is a wasteful number, since it uses less digits than its factorization.

31831763268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2652646946 (or 2652646944 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The spelling of 31831763268 in words is "thirty-one billion, eight hundred thirty-one million, seven hundred sixty-three thousand, two hundred sixty-eight".