131216719 has 2 divisors, whose sum is σ = 131216720. Its totient is φ = 131216718.

The previous prime is 131216713. The next prime is 131216731. The reversal of 131216719 is 917612131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131216719 is a prime.

It is a super-2 number, since 2×131216719² = 34435654690249922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131216713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65608359 + 65608360.

It is an arithmetic number, because the mean of its divisors is an integer number (65608360).

Almost surely, 2^131216719 is an apocalyptic number.

131216719 is a deficient number, since it is larger than the sum of its proper divisors (1).

131216719 is an equidigital number, since it uses as much as digits as its factorization.

131216719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 31.

The square root of 131216719 is about 11454.9866433794. The cubic root of 131216719 is about 508.1552202529.

The spelling of 131216719 in words is "one hundred thirty-one million, two hundred sixteen thousand, seven hundred nineteen".