117147231 has 12 divisors (see below), whose sum is σ = 171596880. Its totient is φ = 76997760.

The previous prime is 117147223. The next prime is 117147241. The reversal of 117147231 is 132741711.

It is not a de Polignac number, because 117147231 - 2³ = 117147223 is a prime.

It is a super-2 number, since 2×117147231² = 27446947461934722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 117147195 and 117147204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117147241) 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, 91026 + ... + 92303.

It is an arithmetic number, because the mean of its divisors is an integer number (14299740).

Almost surely, 2^117147231 is an apocalyptic number.

117147231 is a deficient number, since it is larger than the sum of its proper divisors (54449649).

117147231 is a wasteful number, since it uses less digits than its factorization.

117147231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183406 (or 183403 counting only the distinct ones).

The product of its digits is 1176, while the sum is 27.

The square root of 117147231 is about 10823.4574420561. The cubic root of 117147231 is about 489.3023961716.

Adding to 117147231 its reverse (132741711), we get a palindrome (249888942).

The spelling of 117147231 in words is "one hundred seventeen million, one hundred forty-seven thousand, two hundred thirty-one".