131174257 has 2 divisors, whose sum is σ = 131174258. Its totient is φ = 131174256.

The previous prime is 131174191. The next prime is 131174273. The reversal of 131174257 is 752471131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119333776 + 11840481 = 10924^2 + 3441^2 .

It is an emirp because it is prime and its reverse (752471131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131174257 - 2¹⁵ = 131141489 is a prime.

It is not a weakly prime, because it can be changed into another prime (131174297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65587128 + 65587129.

It is an arithmetic number, because the mean of its divisors is an integer number (65587129).

Almost surely, 2^131174257 is an apocalyptic number.

It is an amenable number.

131174257 is a deficient number, since it is larger than the sum of its proper divisors (1).

131174257 is an equidigital number, since it uses as much as digits as its factorization.

131174257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5880, while the sum is 31.

The square root of 131174257 is about 11453.1330647993. The cubic root of 131174257 is about 508.1004009813.

The spelling of 131174257 in words is "one hundred thirty-one million, one hundred seventy-four thousand, two hundred fifty-seven".