131312204313 has 4 divisors (see below), whose sum is σ = 175082939088. Its totient is φ = 87541469540.

The previous prime is 131312204281. The next prime is 131312204347. The reversal of 131312204313 is 313402213131.

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 131312204313 - 2⁵ = 131312204281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131312204113) 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, 21885367383 + ... + 21885367388.

It is an arithmetic number, because the mean of its divisors is an integer number (43770734772).

Almost surely, 2^131312204313 is an apocalyptic number.

It is an amenable number.

131312204313 is a deficient number, since it is larger than the sum of its proper divisors (43770734775).

131312204313 is an equidigital number, since it uses as much as digits as its factorization.

131312204313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43770734774.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 131312204313 its reverse (313402213131), we get a palindrome (444714417444).

The spelling of 131312204313 in words is "one hundred thirty-one billion, three hundred twelve million, two hundred four thousand, three hundred thirteen".