117212331 has 12 divisors (see below), whose sum is σ = 166018232. Its totient is φ = 73544448.

The previous prime is 117212321. The next prime is 117212339. The reversal of 117212331 is 133212711.

It is a happy number.

It is not a de Polignac number, because 117212331 - 2⁵ = 117212299 is a prime.

It is a super-2 number, since 2×117212331² = 27477461076907122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117212298 and 117212307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117212339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66730 + ... + 68463.

Almost surely, 2^117212331 is an apocalyptic number.

117212331 is a deficient number, since it is larger than the sum of its proper divisors (48805901).

117212331 is a wasteful number, since it uses less digits than its factorization.

117212331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135230 (or 135213 counting only the distinct ones).

The product of its digits is 252, while the sum is 21.

The square root of 117212331 is about 10826.4643813204. The cubic root of 117212331 is about 489.3930162886.

The spelling of 117212331 in words is "one hundred seventeen million, two hundred twelve thousand, three hundred thirty-one".