117788831 has 2 divisors, whose sum is σ = 117788832. Its totient is φ = 117788830.

The previous prime is 117788791. The next prime is 117788833. The reversal of 117788831 is 138887711.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117788831 is a prime.

It is a super-2 number, since 2×117788831² = 27748417416693122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 117788833, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117788833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58894415 + 58894416.

It is an arithmetic number, because the mean of its divisors is an integer number (58894416).

Almost surely, 2^117788831 is an apocalyptic number.

117788831 is a deficient number, since it is larger than the sum of its proper divisors (1).

117788831 is an equidigital number, since it uses as much as digits as its factorization.

117788831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75264, while the sum is 44.

The square root of 117788831 is about 10853.0562976518. The cubic root of 117788831 is about 490.1940519757.

The spelling of 117788831 in words is "one hundred seventeen million, seven hundred eighty-eight thousand, eight hundred thirty-one".