117351656631 has 32 divisors (see below), whose sum is σ = 189713053440. Its totient is φ = 71102037600.

The previous prime is 117351656629. The next prime is 117351656657. The reversal of 117351656631 is 136656153711.

117351656631 is a `hidden beast` number, since 1 + 1 + 7 + 3 + 5 + 1 + 6 + 5 + 6 + 631 = 666.

It is not a de Polignac number, because 117351656631 - 2¹ = 117351656629 is a prime.

It is a super-2 number, since 2×117351656631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117351656231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1027741 + ... + 1136201.

It is an arithmetic number, because the mean of its divisors is an integer number (5928532920).

Almost surely, 2^117351656631 is an apocalyptic number.

117351656631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

117351656631 is a deficient number, since it is larger than the sum of its proper divisors (72361396809).

117351656631 is a wasteful number, since it uses less digits than its factorization.

117351656631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112124 (or 112118 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The spelling of 117351656631 in words is "one hundred seventeen billion, three hundred fifty-one million, six hundred fifty-six thousand, six hundred thirty-one".