31263107136 has 56 divisors (see below), whose sum is σ = 83520101184. Its totient is φ = 10319854080.

The previous prime is 31263107131. The next prime is 31263107143. The reversal of 31263107136 is 63170136213.

It is a junction number, because it is equal to n+sod(n) for n = 31263107097 and 31263107106.

It is not an unprimeable number, because it can be changed into a prime (31263107131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 770655 + ... + 810206.

Almost surely, 2^31263107136 is an apocalyptic number.

It is an amenable number.

31263107136 is an abundant number, since it is smaller than the sum of its proper divisors (52256994048).

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

31263107136 is a wasteful number, since it uses less digits than its factorization.

31263107136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580979 (or 1580969 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 33.

The spelling of 31263107136 in words is "thirty-one billion, two hundred sixty-three million, one hundred seven thousand, one hundred thirty-six".