131454161 has 2 divisors, whose sum is σ = 131454162. Its totient is φ = 131454160.

The previous prime is 131454137. The next prime is 131454163. The reversal of 131454161 is 161454131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88943761 + 42510400 = 9431^2 + 6520^2 .

It is a cyclic number.

It is not a de Polignac number, because 131454161 - 2⁶ = 131454097 is a prime.

It is a Sophie Germain prime.

Together with 131454163, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131454161.

It is not a weakly prime, because it can be changed into another prime (131454163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65727080 + 65727081.

It is an arithmetic number, because the mean of its divisors is an integer number (65727081).

Almost surely, 2^131454161 is an apocalyptic number.

It is an amenable number.

131454161 is a deficient number, since it is larger than the sum of its proper divisors (1).

131454161 is an equidigital number, since it uses as much as digits as its factorization.

131454161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 26.

The square root of 131454161 is about 11465.3460915927. The cubic root of 131454161 is about 508.4615447509.

The spelling of 131454161 in words is "one hundred thirty-one million, four hundred fifty-four thousand, one hundred sixty-one".