117255831 has 32 divisors (see below), whose sum is σ = 196965888. Its totient is φ = 60272640.

The previous prime is 117255793. The next prime is 117255841. The reversal of 117255831 is 138552711.

It is not a de Polignac number, because 117255831 - 2¹¹ = 117253783 is a prime.

It is a super-2 number, since 2×117255831² = 27497859807001122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 117255792 and 117255801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117255841) 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, 19791 + ... + 25023.

It is an arithmetic number, because the mean of its divisors is an integer number (6155184).

Almost surely, 2^117255831 is an apocalyptic number.

117255831 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

117255831 is a deficient number, since it is larger than the sum of its proper divisors (79710057).

117255831 is a wasteful number, since it uses less digits than its factorization.

117255831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5351.

The product of its digits is 8400, while the sum is 33.

The square root of 117255831 is about 10828.4731610694. The cubic root of 117255831 is about 489.4535502018.

The spelling of 117255831 in words is "one hundred seventeen million, two hundred fifty-five thousand, eight hundred thirty-one".