113287513 has 4 divisors (see below), whose sum is σ = 113718528. Its totient is φ = 112856500.

The previous prime is 113287487. The next prime is 113287549. The reversal of 113287513 is 315782311.

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.

It is a cyclic number.

It is not a de Polignac number, because 113287513 - 2²¹ = 111190361 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113287583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215113 + ... + 215638.

It is an arithmetic number, because the mean of its divisors is an integer number (28429632).

Almost surely, 2^113287513 is an apocalyptic number.

It is an amenable number.

113287513 is a deficient number, since it is larger than the sum of its proper divisors (431015).

113287513 is an equidigital number, since it uses as much as digits as its factorization.

113287513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431014.

The product of its digits is 5040, while the sum is 31.

The square root of 113287513 is about 10643.6606954562. The cubic root of 113287513 is about 483.8684969902.

The spelling of 113287513 in words is "one hundred thirteen million, two hundred eighty-seven thousand, five hundred thirteen".