113512513 has 4 divisors (see below), whose sum is σ = 113738688. Its totient is φ = 113286340.

The previous prime is 113512507. The next prime is 113512523. The reversal of 113512513 is 315215311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 315215311 = 149 ⋅2115539.

It is a cyclic number.

It is not a de Polignac number, because 113512513 - 2⁵ = 113512481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113512523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112333 + ... + 113338.

It is an arithmetic number, because the mean of its divisors is an integer number (28434672).

Almost surely, 2^113512513 is an apocalyptic number.

It is an amenable number.

113512513 is a deficient number, since it is larger than the sum of its proper divisors (226175).

113512513 is an equidigital number, since it uses as much as digits as its factorization.

113512513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226174.

The product of its digits is 450, while the sum is 22.

The square root of 113512513 is about 10654.2251243345. The cubic root of 113512513 is about 484.1886217554.

Adding to 113512513 its reverse (315215311), we get a palindrome (428727824).

The spelling of 113512513 in words is "one hundred thirteen million, five hundred twelve thousand, five hundred thirteen".