257364311 has 2 divisors, whose sum is σ = 257364312. Its totient is φ = 257364310.

The previous prime is 257364281. The next prime is 257364337. The reversal of 257364311 is 113463752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 257364311 - 2¹⁰ = 257363287 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257364361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128682155 + 128682156.

It is an arithmetic number, because the mean of its divisors is an integer number (128682156).

Almost surely, 2^257364311 is an apocalyptic number.

257364311 is a deficient number, since it is larger than the sum of its proper divisors (1).

257364311 is an equidigital number, since it uses as much as digits as its factorization.

257364311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 32.

The square root of 257364311 is about 16042.5780658845. The cubic root of 257364311 is about 636.0863962045.

The spelling of 257364311 in words is "two hundred fifty-seven million, three hundred sixty-four thousand, three hundred eleven".