131302222013 has 4 divisors (see below), whose sum is σ = 131654239068. Its totient is φ = 130950204960.

The previous prime is 131302221991. The next prime is 131302222027. The reversal of 131302222013 is 310222203131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64664929849 + 66637292164 = 254293^2 + 258142^2 .

It is a cyclic number.

It is not a de Polignac number, because 131302222013 - 2³⁰ = 130228480189 is a prime.

It is a super-2 number, since 2×131302222013² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131302222913) 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, 176007968 + ... + 176008713.

It is an arithmetic number, because the mean of its divisors is an integer number (32913559767).

Almost surely, 2^131302222013 is an apocalyptic number.

It is an amenable number.

131302222013 is a deficient number, since it is larger than the sum of its proper divisors (352017055).

131302222013 is an equidigital number, since it uses as much as digits as its factorization.

131302222013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352017054.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 131302222013 its reverse (310222203131), we get a palindrome (441524425144).

The spelling of 131302222013 in words is "one hundred thirty-one billion, three hundred two million, two hundred twenty-two thousand, thirteen".