117153531 has 36 divisors (see below), whose sum is σ = 187354440. Its totient is φ = 70488000.

The previous prime is 117153521. The next prime is 117153643. The reversal of 117153531 is 135351711.

117153531 is a `hidden beast` number, since 11 + 71 + 53 + 531 = 666.

It is not a de Polignac number, because 117153531 - 2⁵ = 117153499 is a prime.

It is a super-2 number, since 2×117153531² = 27449899651535922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 117153495 and 117153504.

It is not an unprimeable number, because it can be changed into a prime (117153521) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 194631 + ... + 195231.

It is an arithmetic number, because the mean of its divisors is an integer number (5204290).

Almost surely, 2^117153531 is an apocalyptic number.

117153531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

117153531 is a deficient number, since it is larger than the sum of its proper divisors (70200909).

117153531 is a wasteful number, since it uses less digits than its factorization.

117153531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808 (or 794 counting only the distinct ones).

The product of its digits is 1575, while the sum is 27.

The square root of 117153531 is about 10823.7484726873. The cubic root of 117153531 is about 489.3111673273.

The spelling of 117153531 in words is "one hundred seventeen million, one hundred fifty-three thousand, five hundred thirty-one".