131709719 has 2 divisors, whose sum is σ = 131709720. Its totient is φ = 131709718.

The previous prime is 131709709. The next prime is 131709737. The reversal of 131709719 is 917907131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131709719 - 2²⁰ = 130661143 is a prime.

It is a super-2 number, since 2×131709719² = 34694900158117922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131709709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65854859 + 65854860.

It is an arithmetic number, because the mean of its divisors is an integer number (65854860).

Almost surely, 2^131709719 is an apocalyptic number.

131709719 is a deficient number, since it is larger than the sum of its proper divisors (1).

131709719 is an equidigital number, since it uses as much as digits as its factorization.

131709719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11907, while the sum is 38.

The square root of 131709719 is about 11476.4854811915. The cubic root of 131709719 is about 508.7908288643.

The spelling of 131709719 in words is "one hundred thirty-one million, seven hundred nine thousand, seven hundred nineteen".