115777631 has 2 divisors, whose sum is σ = 115777632. Its totient is φ = 115777630.

The previous prime is 115777579. The next prime is 115777637. The reversal of 115777631 is 136777511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115777631 - 2⁶ = 115777567 is a prime.

It is a super-2 number, since 2×115777631² = 26808919679944322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115777637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57888815 + 57888816.

It is an arithmetic number, because the mean of its divisors is an integer number (57888816).

Almost surely, 2^115777631 is an apocalyptic number.

115777631 is a deficient number, since it is larger than the sum of its proper divisors (1).

115777631 is an equidigital number, since it uses as much as digits as its factorization.

115777631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30870, while the sum is 38.

The square root of 115777631 is about 10760.0014405203. The cubic root of 115777631 is about 487.3880607329.

The spelling of 115777631 in words is "one hundred fifteen million, seven hundred seventy-seven thousand, six hundred thirty-one".