131320313 has 4 divisors (see below), whose sum is σ = 131554128. Its totient is φ = 131086500.

The previous prime is 131320297. The next prime is 131320327. The reversal of 131320313 is 313023131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 313023131 = 1249 ⋅250619.

It is a cyclic number.

It is not a de Polignac number, because 131320313 - 2⁴ = 131320297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131320291 and 131320300.

It is not an unprimeable number, because it can be changed into a prime (131320513) 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, 116063 + ... + 117188.

It is an arithmetic number, because the mean of its divisors is an integer number (32888532).

Almost surely, 2^131320313 is an apocalyptic number.

It is an amenable number.

131320313 is a deficient number, since it is larger than the sum of its proper divisors (233815).

131320313 is an equidigital number, since it uses as much as digits as its factorization.

131320313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233814.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 131320313 is about 11459.5075374119. The cubic root of 131320313 is about 508.2889125268.

Adding to 131320313 its reverse (313023131), we get a palindrome (444343444).

The spelling of 131320313 in words is "one hundred thirty-one million, three hundred twenty thousand, three hundred thirteen".