31117565401 has 8 divisors (see below), whose sum is σ = 33548022144. Its totient is φ = 28692365520.

The previous prime is 31117565393. The next prime is 31117565449. The reversal of 31117565401 is 10456571113.

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

It is not a de Polignac number, because 31117565401 - 2³ = 31117565393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31117566401) 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, 1301911 + ... + 1325596.

It is an arithmetic number, because the mean of its divisors is an integer number (4193502768).

Almost surely, 2^31117565401 is an apocalyptic number.

It is an amenable number.

31117565401 is a deficient number, since it is larger than the sum of its proper divisors (2430456743).

31117565401 is a wasteful number, since it uses less digits than its factorization.

31117565401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628431.

The product of its (nonzero) digits is 12600, while the sum is 34.

The spelling of 31117565401 in words is "thirty-one billion, one hundred seventeen million, five hundred sixty-five thousand, four hundred one".