131519237 has 2 divisors, whose sum is σ = 131519238. Its totient is φ = 131519236.

The previous prime is 131519189. The next prime is 131519239. The reversal of 131519237 is 732915131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92756161 + 38763076 = 9631^2 + 6226^2 .

It is a cyclic number.

It is not a de Polignac number, because 131519237 - 2¹⁴ = 131502853 is a prime.

Together with 131519239, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131519239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65759618 + 65759619.

It is an arithmetic number, because the mean of its divisors is an integer number (65759619).

Almost surely, 2^131519237 is an apocalyptic number.

It is an amenable number.

131519237 is a deficient number, since it is larger than the sum of its proper divisors (1).

131519237 is an equidigital number, since it uses as much as digits as its factorization.

131519237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5670, while the sum is 32.

The square root of 131519237 is about 11468.1836835656. The cubic root of 131519237 is about 508.5454350454.

The spelling of 131519237 in words is "one hundred thirty-one million, five hundred nineteen thousand, two hundred thirty-seven".