131957461 has 2 divisors, whose sum is σ = 131957462. Its totient is φ = 131957460.

The previous prime is 131957447. The next prime is 131957491. The reversal of 131957461 is 164759131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123343236 + 8614225 = 11106^2 + 2935^2 .

It is a cyclic number.

It is not a de Polignac number, because 131957461 - 2⁹ = 131956949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131957461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131957491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65978730 + 65978731.

It is an arithmetic number, because the mean of its divisors is an integer number (65978731).

Almost surely, 2^131957461 is an apocalyptic number.

It is an amenable number.

131957461 is a deficient number, since it is larger than the sum of its proper divisors (1).

131957461 is an equidigital number, since it uses as much as digits as its factorization.

131957461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 37.

The square root of 131957461 is about 11487.2738715502. The cubic root of 131957461 is about 509.1096357820.

The spelling of 131957461 in words is "one hundred thirty-one million, nine hundred fifty-seven thousand, four hundred sixty-one".