131315013 has 12 divisors (see below), whose sum is σ = 196702688. Its totient is φ = 87543180.

The previous prime is 131315003. The next prime is 131315029. The reversal of 131315013 is 310513131.

131315013 is a `hidden beast` number, since 131 + 31 + 501 + 3 = 666.

It is not a de Polignac number, because 131315013 - 2⁹ = 131314501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131315003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 269953 + ... + 270438.

Almost surely, 2^131315013 is an apocalyptic number.

It is an amenable number.

131315013 is a deficient number, since it is larger than the sum of its proper divisors (65387675).

131315013 is an frugal number, since it uses more digits than its factorization.

131315013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540406 (or 540394 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 18.

The square root of 131315013 is about 11459.2762860488. The cubic root of 131315013 is about 508.2820743679.

Adding to 131315013 its reverse (310513131), we get a palindrome (441828144).

The spelling of 131315013 in words is "one hundred thirty-one million, three hundred fifteen thousand, thirteen".