131697743 has 2 divisors, whose sum is σ = 131697744. Its totient is φ = 131697742.

The previous prime is 131697733. The next prime is 131697749. The reversal of 131697743 is 347796131.

It is a strong prime.

It is an emirp because it is prime and its reverse (347796131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131697743 - 2¹⁸ = 131435599 is a prime.

It is a super-2 number, since 2×131697743² = 34688591022588098, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131697743.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131697749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65848871 + 65848872.

It is an arithmetic number, because the mean of its divisors is an integer number (65848872).

Almost surely, 2^131697743 is an apocalyptic number.

131697743 is a deficient number, since it is larger than the sum of its proper divisors (1).

131697743 is an equidigital number, since it uses as much as digits as its factorization.

131697743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 41.

The square root of 131697743 is about 11475.9637068091. The cubic root of 131697743 is about 508.7754074165.

The spelling of 131697743 in words is "one hundred thirty-one million, six hundred ninety-seven thousand, seven hundred forty-three".