131313523 has 4 divisors (see below), whose sum is σ = 143251128. Its totient is φ = 119375920.

The previous prime is 131313521. The next prime is 131313587. The reversal of 131313523 is 325313131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131313523 - 2¹ = 131313521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131313494 and 131313503.

It is not an unprimeable number, because it can be changed into a prime (131313521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5968786 + ... + 5968807.

It is an arithmetic number, because the mean of its divisors is an integer number (35812782).

Almost surely, 2^131313523 is an apocalyptic number.

131313523 is a deficient number, since it is larger than the sum of its proper divisors (11937605).

131313523 is a wasteful number, since it uses less digits than its factorization.

131313523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11937604.

The product of its digits is 810, while the sum is 22.

The square root of 131313523 is about 11459.2112730327. The cubic root of 131313523 is about 508.2801519090.

Adding to 131313523 its reverse (325313131), we get a palindrome (456626654).

The spelling of 131313523 in words is "one hundred thirty-one million, three hundred thirteen thousand, five hundred twenty-three".