117182121531 has 16 divisors (see below), whose sum is σ = 159947120256. Its totient is φ = 76270876416.

The previous prime is 117182121517. The next prime is 117182121559. The reversal of 117182121531 is 135121281711.

It is not a de Polignac number, because 117182121531 - 2⁵ = 117182121499 is a prime.

It is a super-2 number, since 2×117182121531² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 117182121492 and 117182121501.

It is not an unprimeable number, because it can be changed into a prime (117182121571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93396 + ... + 493038.

It is an arithmetic number, because the mean of its divisors is an integer number (9996695016).

Almost surely, 2^117182121531 is an apocalyptic number.

117182121531 is a deficient number, since it is larger than the sum of its proper divisors (42764998725).

117182121531 is a wasteful number, since it uses less digits than its factorization.

117182121531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401962.

The product of its digits is 3360, while the sum is 33.

The spelling of 117182121531 in words is "one hundred seventeen billion, one hundred eighty-two million, one hundred twenty-one thousand, five hundred thirty-one".