131344456577 has 2 divisors, whose sum is σ = 131344456578. Its totient is φ = 131344456576.

The previous prime is 131344456567. The next prime is 131344456601. The reversal of 131344456577 is 775654443131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85804469776 + 45539986801 = 292924^2 + 213401^2 .

It is a cyclic number.

It is not a de Polignac number, because 131344456577 - 2³⁶ = 62624979841 is a prime.

It is not a weakly prime, because it can be changed into another prime (131344456547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65672228288 + 65672228289.

It is an arithmetic number, because the mean of its divisors is an integer number (65672228289).

Almost surely, 2^131344456577 is an apocalyptic number.

It is an amenable number.

131344456577 is a deficient number, since it is larger than the sum of its proper divisors (1).

131344456577 is an equidigital number, since it uses as much as digits as its factorization.

131344456577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4233600, while the sum is 50.

The spelling of 131344456577 in words is "one hundred thirty-one billion, three hundred forty-four million, four hundred fifty-six thousand, five hundred seventy-seven".