131195513 has 4 divisors (see below), whose sum is σ = 138100560. Its totient is φ = 124290468.

The previous prime is 131195509. The next prime is 131195539. The reversal of 131195513 is 315591131.

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 131195513 - 2² = 131195509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131195563) 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, 3452495 + ... + 3452532.

It is an arithmetic number, because the mean of its divisors is an integer number (34525140).

Almost surely, 2^131195513 is an apocalyptic number.

It is an amenable number.

131195513 is a deficient number, since it is larger than the sum of its proper divisors (6905047).

131195513 is an equidigital number, since it uses as much as digits as its factorization.

131195513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6905046.

The product of its digits is 2025, while the sum is 29.

The square root of 131195513 is about 11454.0609829003. The cubic root of 131195513 is about 508.1278443711.

The spelling of 131195513 in words is "one hundred thirty-one million, one hundred ninety-five thousand, five hundred thirteen".