113623513 has 2 divisors, whose sum is σ = 113623514. Its totient is φ = 113623512.

The previous prime is 113623483. The next prime is 113623577. The reversal of 113623513 is 315326311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112296409 + 1327104 = 10597^2 + 1152^2 .

It is an emirp because it is prime and its reverse (315326311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113623513 - 2⁵ = 113623481 is a prime.

It is a super-2 number, since 2×113623513² = 25820605412922338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (113623583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56811756 + 56811757.

It is an arithmetic number, because the mean of its divisors is an integer number (56811757).

Almost surely, 2^113623513 is an apocalyptic number.

It is an amenable number.

113623513 is a deficient number, since it is larger than the sum of its proper divisors (1).

113623513 is an equidigital number, since it uses as much as digits as its factorization.

113623513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 25.

The square root of 113623513 is about 10659.4330524658. The cubic root of 113623513 is about 484.3463941650.

Adding to 113623513 its reverse (315326311), we get a palindrome (428949824).

It can be divided in two parts, 1136 and 23513, that added together give a square (24649 = 157²).

The spelling of 113623513 in words is "one hundred thirteen million, six hundred twenty-three thousand, five hundred thirteen".