131202313 has 4 divisors (see below), whose sum is σ = 143129808. Its totient is φ = 119274820.

The previous prime is 131202301. The next prime is 131202347. The reversal of 131202313 is 313202131.

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 a de Polignac number, because none of the positive numbers 2^k-131202313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131202713) 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, 5963731 + ... + 5963752.

It is an arithmetic number, because the mean of its divisors is an integer number (35782452).

Almost surely, 2^131202313 is an apocalyptic number.

It is an amenable number.

131202313 is a deficient number, since it is larger than the sum of its proper divisors (11927495).

131202313 is a wasteful number, since it uses less digits than its factorization.

131202313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11927494.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 131202313 is about 11454.3578170057. The cubic root of 131202313 is about 508.1366231512.

Adding to 131202313 its reverse (313202131), we get a palindrome (444404444).

The spelling of 131202313 in words is "one hundred thirty-one million, two hundred two thousand, three hundred thirteen".