31109734968 has 96 divisors (see below), whose sum is σ = 88649884800. Its totient is φ = 9068402304.

The previous prime is 31109734967. The next prime is 31109734973. The reversal of 31109734968 is 86943790113.

It is a super-2 number, since 2×31109734968² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31109734968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31109734963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124780 + ... + 278907.

It is an arithmetic number, because the mean of its divisors is an integer number (923436300).

Almost surely, 2^31109734968 is an apocalyptic number.

31109734968 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

31109734968 is an abundant number, since it is smaller than the sum of its proper divisors (57540149832).

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

31109734968 is a wasteful number, since it uses less digits than its factorization.

31109734968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403741 (or 403724 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 31109734968 in words is "thirty-one billion, one hundred nine million, seven hundred thirty-four thousand, nine hundred sixty-eight".