131321303313 has 4 divisors (see below), whose sum is σ = 175095071088. Its totient is φ = 87547535540.

The previous prime is 131321303303. The next prime is 131321303327. The reversal of 131321303313 is 313303123131.

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 131321303313 - 2¹⁶ = 131321237777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131321303303) 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, 21886883883 + ... + 21886883888.

It is an arithmetic number, because the mean of its divisors is an integer number (43773767772).

Almost surely, 2^131321303313 is an apocalyptic number.

It is an amenable number.

131321303313 is a deficient number, since it is larger than the sum of its proper divisors (43773767775).

131321303313 is an equidigital number, since it uses as much as digits as its factorization.

131321303313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43773767774.

The product of its (nonzero) digits is 1458, while the sum is 24.

Adding to 131321303313 its reverse (313303123131), we get a palindrome (444624426444).

The spelling of 131321303313 in words is "one hundred thirty-one billion, three hundred twenty-one million, three hundred three thousand, three hundred thirteen".