113209937 has 2 divisors, whose sum is σ = 113209938. Its totient is φ = 113209936.

The previous prime is 113209891. The next prime is 113209949. The reversal of 113209937 is 739902311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94556176 + 18653761 = 9724^2 + 4319^2 .

It is an emirp because it is prime and its reverse (739902311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113209937 - 2²⁶ = 46101073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113209897 and 113209906.

It is not a weakly prime, because it can be changed into another prime (113209237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56604968 + 56604969.

It is an arithmetic number, because the mean of its divisors is an integer number (56604969).

Almost surely, 2^113209937 is an apocalyptic number.

It is an amenable number.

113209937 is a deficient number, since it is larger than the sum of its proper divisors (1).

113209937 is an equidigital number, since it uses as much as digits as its factorization.

113209937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 113209937 is about 10640.0158364544. The cubic root of 113209937 is about 483.7580254040.

The spelling of 113209937 in words is "one hundred thirteen million, two hundred nine thousand, nine hundred thirty-seven".