131265212257 has 2 divisors, whose sum is σ = 131265212258. Its totient is φ = 131265212256.

The previous prime is 131265212219. The next prime is 131265212261. The reversal of 131265212257 is 752212562131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96342572881 + 34922639376 = 310391^2 + 186876^2 .

It is a cyclic number.

It is not a de Polignac number, because 131265212257 - 2¹⁵ = 131265179489 is a prime.

It is not a weakly prime, because it can be changed into another prime (131265212557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65632606128 + 65632606129.

It is an arithmetic number, because the mean of its divisors is an integer number (65632606129).

Almost surely, 2^131265212257 is an apocalyptic number.

It is an amenable number.

131265212257 is a deficient number, since it is larger than the sum of its proper divisors (1).

131265212257 is an equidigital number, since it uses as much as digits as its factorization.

131265212257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 37.

Adding to 131265212257 its reverse (752212562131), we get a palindrome (883477774388).

The spelling of 131265212257 in words is "one hundred thirty-one billion, two hundred sixty-five million, two hundred twelve thousand, two hundred fifty-seven".