131918719 has 2 divisors, whose sum is σ = 131918720. Its totient is φ = 131918718.

The previous prime is 131918693. The next prime is 131918723. The reversal of 131918719 is 917819131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131918719 - 2¹⁵ = 131885951 is a prime.

It is a super-2 number, since 2×131918719² = 34805096845201922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131918819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65959359 + 65959360.

It is an arithmetic number, because the mean of its divisors is an integer number (65959360).

Almost surely, 2^131918719 is an apocalyptic number.

131918719 is a deficient number, since it is larger than the sum of its proper divisors (1).

131918719 is an equidigital number, since it uses as much as digits as its factorization.

131918719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 40.

The square root of 131918719 is about 11485.5874468832. The cubic root of 131918719 is about 509.0598069560.

The spelling of 131918719 in words is "one hundred thirty-one million, nine hundred eighteen thousand, seven hundred nineteen".