131323523 has 2 divisors, whose sum is σ = 131323524. Its totient is φ = 131323522.

The previous prime is 131323519. The next prime is 131323553. The reversal of 131323523 is 325323131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131323523 - 2² = 131323519 is a prime.

It is not a weakly prime, because it can be changed into another prime (131323553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65661761 + 65661762.

It is an arithmetic number, because the mean of its divisors is an integer number (65661762).

Almost surely, 2^131323523 is an apocalyptic number.

131323523 is a deficient number, since it is larger than the sum of its proper divisors (1).

131323523 is an equidigital number, since it uses as much as digits as its factorization.

131323523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 23.

The square root of 131323523 is about 11459.6475949307. The cubic root of 131323523 is about 508.2930540392.

Adding to 131323523 its reverse (325323131), we get a palindrome (456646654).

The spelling of 131323523 in words is "one hundred thirty-one million, three hundred twenty-three thousand, five hundred twenty-three".