31305763068 has 12 divisors (see below), whose sum is σ = 73046780520. Its totient is φ = 10435254352.

The previous prime is 31305763067. The next prime is 31305763087. The reversal of 31305763068 is 86036750313.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31305763061) 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, 1304406783 + ... + 1304406806.

It is an arithmetic number, because the mean of its divisors is an integer number (6087231710).

Almost surely, 2^31305763068 is an apocalyptic number.

It is an amenable number.

31305763068 is an abundant number, since it is smaller than the sum of its proper divisors (41741017452).

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

31305763068 is a wasteful number, since it uses less digits than its factorization.

31305763068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2608813596 (or 2608813594 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 42.

The spelling of 31305763068 in words is "thirty-one billion, three hundred five million, seven hundred sixty-three thousand, sixty-eight".