131323519 has 2 divisors, whose sum is σ = 131323520. Its totient is φ = 131323518.

The previous prime is 131323477. The next prime is 131323523. The reversal of 131323519 is 915323131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131323519 - 2¹⁵ = 131290751 is a prime.

It is a super-2 number, since 2×131323519² = 34491733285086722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131323579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65661759 + 65661760.

It is an arithmetic number, because the mean of its divisors is an integer number (65661760).

Almost surely, 2^131323519 is an apocalyptic number.

131323519 is a deficient number, since it is larger than the sum of its proper divisors (1).

131323519 is an equidigital number, since it uses as much as digits as its factorization.

131323519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2430, while the sum is 28.

The square root of 131323519 is about 11459.6474204052. The cubic root of 131323519 is about 508.2930488784.

The spelling of 131323519 in words is "one hundred thirty-one million, three hundred twenty-three thousand, five hundred nineteen".