113440637 has 2 divisors, whose sum is σ = 113440638. Its totient is φ = 113440636.

The previous prime is 113440619. The next prime is 113440661. The reversal of 113440637 is 736044311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112232836 + 1207801 = 10594^2 + 1099^2 .

It is a cyclic number.

It is not a de Polignac number, because 113440637 - 2⁸ = 113440381 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113440937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56720318 + 56720319.

It is an arithmetic number, because the mean of its divisors is an integer number (56720319).

Almost surely, 2^113440637 is an apocalyptic number.

It is an amenable number.

113440637 is a deficient number, since it is larger than the sum of its proper divisors (1).

113440637 is an equidigital number, since it uses as much as digits as its factorization.

113440637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 113440637 is about 10650.8514683099. The cubic root of 113440637 is about 484.0864042745.

Adding to 113440637 its reverse (736044311), we get a palindrome (849484948).

The spelling of 113440637 in words is "one hundred thirteen million, four hundred forty thousand, six hundred thirty-seven".