131196731 has 2 divisors, whose sum is σ = 131196732. Its totient is φ = 131196730.

The previous prime is 131196727. The next prime is 131196739. The reversal of 131196731 is 137691131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131196731 - 2² = 131196727 is a prime.

It is a super-2 number, since 2×131196731² = 34425164450172722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131196739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65598365 + 65598366.

It is an arithmetic number, because the mean of its divisors is an integer number (65598366).

Almost surely, 2^131196731 is an apocalyptic number.

131196731 is a deficient number, since it is larger than the sum of its proper divisors (1).

131196731 is an equidigital number, since it uses as much as digits as its factorization.

131196731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3402, while the sum is 32.

The square root of 131196731 is about 11454.1141516924. The cubic root of 131196731 is about 508.1294168279.

The spelling of 131196731 in words is "one hundred thirty-one million, one hundred ninety-six thousand, seven hundred thirty-one".