131305323 has 8 divisors (see below), whose sum is σ = 175211008. Its totient is φ = 87468264.

The previous prime is 131305309. The next prime is 131305337. The reversal of 131305323 is 323503131.

It is an interprime number because it is at equal distance from previous prime (131305309) and next prime (131305337).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131305323 - 2⁶ = 131305259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131305323.

It is not an unprimeable number, because it can be changed into a prime (131305303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12511 + ... + 20472.

It is an arithmetic number, because the mean of its divisors is an integer number (21901376).

Almost surely, 2^131305323 is an apocalyptic number.

131305323 is a deficient number, since it is larger than the sum of its proper divisors (43905685).

131305323 is a wasteful number, since it uses less digits than its factorization.

131305323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34313.

The product of its (nonzero) digits is 810, while the sum is 21.

The square root of 131305323 is about 11458.8534766791. The cubic root of 131305323 is about 508.2695716735.

Adding to 131305323 its reverse (323503131), we get a palindrome (454808454).

The spelling of 131305323 in words is "one hundred thirty-one million, three hundred five thousand, three hundred twenty-three".