131097513 has 4 divisors (see below), whose sum is σ = 174796688. Its totient is φ = 87398340.

The previous prime is 131097509. The next prime is 131097517. The reversal of 131097513 is 315790131.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (131097509) and next prime (131097517).

It is not a de Polignac number, because 131097513 - 2² = 131097509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131097517) 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, 21849583 + ... + 21849588.

It is an arithmetic number, because the mean of its divisors is an integer number (43699172).

Almost surely, 2^131097513 is an apocalyptic number.

It is an amenable number.

131097513 is a deficient number, since it is larger than the sum of its proper divisors (43699175).

131097513 is an equidigital number, since it uses as much as digits as its factorization.

131097513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43699174.

The product of its (nonzero) digits is 2835, while the sum is 30.

The square root of 131097513 is about 11449.7822250032. The cubic root of 131097513 is about 508.0012929576.

The spelling of 131097513 in words is "one hundred thirty-one million, ninety-seven thousand, five hundred thirteen".