113779931 has 2 divisors, whose sum is σ = 113779932. Its totient is φ = 113779930.

The previous prime is 113779901. The next prime is 113779937. The reversal of 113779931 is 139977311.

It is a strong prime.

It is an emirp because it is prime and its reverse (139977311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113779931 - 2¹⁸ = 113517787 is a prime.

It is a super-2 number, since 2×113779931² = 25891745396729522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (113779937) 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, 56889965 + 56889966.

It is an arithmetic number, because the mean of its divisors is an integer number (56889966).

Almost surely, 2^113779931 is an apocalyptic number.

113779931 is a deficient number, since it is larger than the sum of its proper divisors (1).

113779931 is an equidigital number, since it uses as much as digits as its factorization.

113779931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35721, while the sum is 41.

The square root of 113779931 is about 10666.7675984808. The cubic root of 113779931 is about 484.5685481717.

The spelling of 113779931 in words is "one hundred thirteen million, seven hundred seventy-nine thousand, nine hundred thirty-one".