117316231 has 2 divisors, whose sum is σ = 117316232. Its totient is φ = 117316230.

The previous prime is 117316187. The next prime is 117316259. The reversal of 117316231 is 132613711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117316231 - 2²¹ = 115219079 is a prime.

It is a super-2 number, since 2×117316231² = 27526196112090722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 117316196 and 117316205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117316831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58658115 + 58658116.

It is an arithmetic number, because the mean of its divisors is an integer number (58658116).

Almost surely, 2^117316231 is an apocalyptic number.

117316231 is a deficient number, since it is larger than the sum of its proper divisors (1).

117316231 is an equidigital number, since it uses as much as digits as its factorization.

117316231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756, while the sum is 25.

The square root of 117316231 is about 10831.2617455216. The cubic root of 117316231 is about 489.5375770672.

Adding to 117316231 its reverse (132613711), we get a palindrome (249929942).

The spelling of 117316231 in words is "one hundred seventeen million, three hundred sixteen thousand, two hundred thirty-one".