113291939 has 2 divisors, whose sum is σ = 113291940. Its totient is φ = 113291938.

The previous prime is 113291923. The next prime is 113291953. The reversal of 113291939 is 939192311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 113291939 - 2⁴ = 113291923 is a prime.

It is not a weakly prime, because it can be changed into another prime (113291909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56645969 + 56645970.

It is an arithmetic number, because the mean of its divisors is an integer number (56645970).

Almost surely, 2^113291939 is an apocalyptic number.

113291939 is a deficient number, since it is larger than the sum of its proper divisors (1).

113291939 is an equidigital number, since it uses as much as digits as its factorization.

113291939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13122, while the sum is 38.

The square root of 113291939 is about 10643.8686106133. The cubic root of 113291939 is about 483.8747982850.

The spelling of 113291939 in words is "one hundred thirteen million, two hundred ninety-one thousand, nine hundred thirty-nine".