117757931 has 2 divisors, whose sum is σ = 117757932. Its totient is φ = 117757930.

The previous prime is 117757921. The next prime is 117757949. The reversal of 117757931 is 139757711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117757931 - 2⁶ = 117757867 is a prime.

It is a super-2 number, since 2×117757931² = 27733860626801522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (117757921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58878965 + 58878966.

It is an arithmetic number, because the mean of its divisors is an integer number (58878966).

Almost surely, 2^117757931 is an apocalyptic number.

117757931 is a deficient number, since it is larger than the sum of its proper divisors (1).

117757931 is an equidigital number, since it uses as much as digits as its factorization.

117757931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46305, while the sum is 41.

The square root of 117757931 is about 10851.6326421419. The cubic root of 117757931 is about 490.1511833925.

The spelling of 117757931 in words is "one hundred seventeen million, seven hundred fifty-seven thousand, nine hundred thirty-one".