117751131 has 32 divisors (see below), whose sum is σ = 180211200. Its totient is φ = 75932640.

The previous prime is 117751063. The next prime is 117751141. The reversal of 117751131 is 131157711.

117751131 is a `hidden beast` number, since 117 + 7 + 511 + 31 = 666.

It is not a de Polignac number, because 117751131 - 2¹⁹ = 117226843 is a prime.

It is a super-2 number, since 2×117751131² = 27730657703558322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 117751095 and 117751104.

It is not an unprimeable number, because it can be changed into a prime (117751141) 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, 310500 + ... + 310878.

It is an arithmetic number, because the mean of its divisors is an integer number (5631600).

Almost surely, 2^117751131 is an apocalyptic number.

117751131 is a deficient number, since it is larger than the sum of its proper divisors (62460069).

117751131 is a wasteful number, since it uses less digits than its factorization.

117751131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736 (or 730 counting only the distinct ones).

The product of its digits is 735, while the sum is 27.

The square root of 117751131 is about 10851.3193207093. The cubic root of 117751131 is about 490.1417485228.

The spelling of 117751131 in words is "one hundred seventeen million, seven hundred fifty-one thousand, one hundred thirty-one".