31113508957 has 16 divisors (see below), whose sum is σ = 34191360000. Its totient is φ = 28180913904.

The previous prime is 31113508927. The next prime is 31113508969. The reversal of 31113508957 is 75980531113.

It is a cyclic number.

It is not a de Polignac number, because 31113508957 - 2¹¹ = 31113506909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113508927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 962544 + ... + 994342.

It is an arithmetic number, because the mean of its divisors is an integer number (2136960000).

Almost surely, 2^31113508957 is an apocalyptic number.

It is an amenable number.

31113508957 is a deficient number, since it is larger than the sum of its proper divisors (3077851043).

31113508957 is a wasteful number, since it uses less digits than its factorization.

31113508957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34080.

The product of its (nonzero) digits is 113400, while the sum is 43.

The spelling of 31113508957 in words is "thirty-one billion, one hundred thirteen million, five hundred eight thousand, nine hundred fifty-seven".