117518311 has 2 divisors, whose sum is σ = 117518312. Its totient is φ = 117518310.

The previous prime is 117518309. The next prime is 117518321. The reversal of 117518311 is 113815711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117518311 - 2¹ = 117518309 is a prime.

Together with 117518309, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 117518311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117518321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58759155 + 58759156.

It is an arithmetic number, because the mean of its divisors is an integer number (58759156).

Almost surely, 2^117518311 is an apocalyptic number.

117518311 is a deficient number, since it is larger than the sum of its proper divisors (1).

117518311 is an equidigital number, since it uses as much as digits as its factorization.

117518311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840, while the sum is 28.

The square root of 117518311 is about 10840.5862848833. The cubic root of 117518311 is about 489.8184958749.

The spelling of 117518311 in words is "one hundred seventeen million, five hundred eighteen thousand, three hundred eleven".