31613917461 has 24 divisors (see below), whose sum is σ = 49050854784. Its totient is φ = 18058824000.

The previous prime is 31613917457. The next prime is 31613917501. The reversal of 31613917461 is 16471931613.

It is not a de Polignac number, because 31613917461 - 2² = 31613917457 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31613907461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 405316 + ... + 476978.

It is an arithmetic number, because the mean of its divisors is an integer number (2043785616).

Almost surely, 2^31613917461 is an apocalyptic number.

It is an amenable number.

31613917461 is a deficient number, since it is larger than the sum of its proper divisors (17436937323).

31613917461 is a wasteful number, since it uses less digits than its factorization.

31613917461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74681 (or 74674 counting only the distinct ones).

The product of its digits is 81648, while the sum is 42.

The spelling of 31613917461 in words is "thirty-one billion, six hundred thirteen million, nine hundred seventeen thousand, four hundred sixty-one".