31311013134 has 24 divisors (see below), whose sum is σ = 66522363768. Its totient is φ = 9823062400.

The previous prime is 31311013091. The next prime is 31311013147. The reversal of 31311013134 is 43131011313.

It is a self number, because there is not a number n which added to its sum of digits gives 31311013134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9026817 + ... + 9030284.

It is an arithmetic number, because the mean of its divisors is an integer number (2771765157).

Almost surely, 2^31311013134 is an apocalyptic number.

31311013134 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

31311013134 is an abundant number, since it is smaller than the sum of its proper divisors (35211350634).

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

31311013134 is a wasteful number, since it uses less digits than its factorization.

31311013134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18057140 (or 18057123 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31311013134 its reverse (43131011313), we get a palindrome (74442024447).

The spelling of 31311013134 in words is "thirty-one billion, three hundred eleven million, thirteen thousand, one hundred thirty-four".