131310313 has 4 divisors (see below), whose sum is σ = 131335380. Its totient is φ = 131285248.

The previous prime is 131310307. The next prime is 131310317. The reversal of 131310313 is 313013131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313013131 = 3851 ⋅81281.

It can be written as a sum of positive squares in 2 ways, for example, as 68773849 + 62536464 = 8293^2 + 7908^2 .

It is a cyclic number.

It is not a de Polignac number, because 131310313 - 2¹⁷ = 131179241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131310317) 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, 1348 + ... + 16261.

It is an arithmetic number, because the mean of its divisors is an integer number (32833845).

Almost surely, 2^131310313 is an apocalyptic number.

It is an amenable number.

131310313 is a deficient number, since it is larger than the sum of its proper divisors (25067).

131310313 is an equidigital number, since it uses as much as digits as its factorization.

131310313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25066.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 131310313 is about 11459.0712101810. The cubic root of 131310313 is about 508.2760101863.

Adding to 131310313 its reverse (313013131), we get a palindrome (444323444).

The spelling of 131310313 in words is "one hundred thirty-one million, three hundred ten thousand, three hundred thirteen".