31375132117 has 16 divisors (see below), whose sum is σ = 39385589760. Its totient is φ = 24369828912.

The previous prime is 31375132073. The next prime is 31375132121. The reversal of 31375132117 is 71123157313.

It is a cyclic number.

It is not a de Polignac number, because 31375132117 - 2¹¹ = 31375130069 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 (31375132127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5125273 + ... + 5131390.

It is an arithmetic number, because the mean of its divisors is an integer number (2461599360).

Almost surely, 2^31375132117 is an apocalyptic number.

It is an amenable number.

31375132117 is a deficient number, since it is larger than the sum of its proper divisors (8010457643).

31375132117 is a wasteful number, since it uses less digits than its factorization.

31375132117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10256712.

The product of its digits is 13230, while the sum is 34.

The spelling of 31375132117 in words is "thirty-one billion, three hundred seventy-five million, one hundred thirty-two thousand, one hundred seventeen".