113436581 has 2 divisors, whose sum is σ = 113436582. Its totient is φ = 113436580.

The previous prime is 113436577. The next prime is 113436599. The reversal of 113436581 is 185634311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81739681 + 31696900 = 9041^2 + 5630^2 .

It is a cyclic number.

It is not a de Polignac number, because 113436581 - 2² = 113436577 is a prime.

It is a super-2 number, since 2×113436581² = 25735715817939122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113436541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56718290 + 56718291.

It is an arithmetic number, because the mean of its divisors is an integer number (56718291).

Almost surely, 2^113436581 is an apocalyptic number.

It is an amenable number.

113436581 is a deficient number, since it is larger than the sum of its proper divisors (1).

113436581 is an equidigital number, since it uses as much as digits as its factorization.

113436581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 113436581 is about 10650.6610592958. The cubic root of 113436581 is about 484.0806348021.

The spelling of 113436581 in words is "one hundred thirteen million, four hundred thirty-six thousand, five hundred eighty-one".