31607563117 has 8 divisors (see below), whose sum is σ = 34146296856. Its totient is φ = 29084169792.

The previous prime is 31607563109. The next prime is 31607563133. The reversal of 31607563117 is 71136570613.

It can be written as a sum of positive squares in 4 ways, for example, as 387853636 + 31219709481 = 19694^2 + 176691^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31607563117 - 2³ = 31607563109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31607563117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31607569117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3830818 + ... + 3839059.

It is an arithmetic number, because the mean of its divisors is an integer number (4268287107).

Almost surely, 2^31607563117 is an apocalyptic number.

It is an amenable number.

31607563117 is a deficient number, since it is larger than the sum of its proper divisors (2538733739).

31607563117 is a wasteful number, since it uses less digits than its factorization.

31607563117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7670207.

The product of its (nonzero) digits is 79380, while the sum is 40.

The spelling of 31607563117 in words is "thirty-one billion, six hundred seven million, five hundred sixty-three thousand, one hundred seventeen".