131113513 has 4 divisors (see below), whose sum is σ = 131203408. Its totient is φ = 131023620.

The previous prime is 131113483. The next prime is 131113589. The reversal of 131113513 is 315311131.

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 131113513 - 2⁵ = 131113481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131113013) 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, 42723 + ... + 45688.

It is an arithmetic number, because the mean of its divisors is an integer number (32800852).

Almost surely, 2^131113513 is an apocalyptic number.

It is an amenable number.

131113513 is a deficient number, since it is larger than the sum of its proper divisors (89895).

131113513 is an equidigital number, since it uses as much as digits as its factorization.

131113513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89894.

The product of its digits is 135, while the sum is 19.

The square root of 131113513 is about 11450.4809069314. The cubic root of 131113513 is about 508.0219587197.

Adding to 131113513 its reverse (315311131), we get a palindrome (446424644).

The spelling of 131113513 in words is "one hundred thirty-one million, one hundred thirteen thousand, five hundred thirteen".