131446577 has 2 divisors, whose sum is σ = 131446578. Its totient is φ = 131446576.

The previous prime is 131446573. The next prime is 131446621. The reversal of 131446577 is 775644131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119224561 + 12222016 = 10919^2 + 3496^2 .

It is a cyclic number.

It is not a de Polignac number, because 131446577 - 2² = 131446573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131446577.

It is not a weakly prime, because it can be changed into another prime (131446573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65723288 + 65723289.

It is an arithmetic number, because the mean of its divisors is an integer number (65723289).

Almost surely, 2^131446577 is an apocalyptic number.

It is an amenable number.

131446577 is a deficient number, since it is larger than the sum of its proper divisors (1).

131446577 is an equidigital number, since it uses as much as digits as its factorization.

131446577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 38.

The square root of 131446577 is about 11465.0153510582. The cubic root of 131446577 is about 508.4517663194.

The spelling of 131446577 in words is "one hundred thirty-one million, four hundred forty-six thousand, five hundred seventy-seven".