131163761 has 2 divisors, whose sum is σ = 131163762. Its totient is φ = 131163760.

The previous prime is 131163757. The next prime is 131163811. The reversal of 131163761 is 167361131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72931600 + 58232161 = 8540^2 + 7631^2 .

It is a cyclic number.

It is not a de Polignac number, because 131163761 - 2² = 131163757 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131163161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65581880 + 65581881.

It is an arithmetic number, because the mean of its divisors is an integer number (65581881).

Almost surely, 2^131163761 is an apocalyptic number.

It is an amenable number.

131163761 is a deficient number, since it is larger than the sum of its proper divisors (1).

131163761 is an equidigital number, since it uses as much as digits as its factorization.

131163761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 29.

The square root of 131163761 is about 11452.6748404030. The cubic root of 131163761 is about 508.0868486167.

The spelling of 131163761 in words is "one hundred thirty-one million, one hundred sixty-three thousand, seven hundred sixty-one".