131504334257 has 2 divisors, whose sum is σ = 131504334258. Its totient is φ = 131504334256.

The previous prime is 131504334197. The next prime is 131504334277. The reversal of 131504334257 is 752433405131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130703217841 + 801116416 = 361529^2 + 28304^2 .

It is a cyclic number.

It is not a de Polignac number, because 131504334257 - 2¹⁴ = 131504317873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131504334257.

It is not a weakly prime, because it can be changed into another prime (131504334277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65752167128 + 65752167129.

It is an arithmetic number, because the mean of its divisors is an integer number (65752167129).

Almost surely, 2^131504334257 is an apocalyptic number.

It is an amenable number.

131504334257 is a deficient number, since it is larger than the sum of its proper divisors (1).

131504334257 is an equidigital number, since it uses as much as digits as its factorization.

131504334257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 38.

Adding to 131504334257 its reverse (752433405131), we get a palindrome (883937739388).

The spelling of 131504334257 in words is "one hundred thirty-one billion, five hundred four million, three hundred thirty-four thousand, two hundred fifty-seven".