31316810117 has 8 divisors (see below), whose sum is σ = 33967731672. Its totient is φ = 28755750400.

The previous prime is 31316810081. The next prime is 31316810137. The reversal of 31316810117 is 71101861313.

It can be written as a sum of positive squares in 4 ways, for example, as 1180197316 + 30136612801 = 34354^2 + 173599^2 .

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 31316810117 - 2¹⁴ = 31316793733 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 (31316810137) 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, 22464734 + ... + 22466127.

It is an arithmetic number, because the mean of its divisors is an integer number (4245966459).

Almost surely, 2^31316810117 is an apocalyptic number.

It is an amenable number.

31316810117 is a deficient number, since it is larger than the sum of its proper divisors (2650921555).

31316810117 is a wasteful number, since it uses less digits than its factorization.

31316810117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44930919.

The product of its (nonzero) digits is 3024, while the sum is 32.

The spelling of 31316810117 in words is "thirty-one billion, three hundred sixteen million, eight hundred ten thousand, one hundred seventeen".