257311703 has 12 divisors (see below), whose sum is σ = 286248984. Its totient is φ = 231092400.

The previous prime is 257311697. The next prime is 257311709. The reversal of 257311703 is 307113752.

It is an interprime number because it is at equal distance from previous prime (257311697) and next prime (257311709).

It is not a de Polignac number, because 257311703 - 2⁸ = 257311447 is a prime.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257311709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2768 + ... + 22853.

It is an arithmetic number, because the mean of its divisors is an integer number (23854082).

Almost surely, 2^257311703 is an apocalyptic number.

257311703 is a deficient number, since it is larger than the sum of its proper divisors (28937281).

257311703 is a wasteful number, since it uses less digits than its factorization.

257311703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25726 (or 25715 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 29.

The square root of 257311703 is about 16040.9383453712. The cubic root of 257311703 is about 636.0430523116.

The spelling of 257311703 in words is "two hundred fifty-seven million, three hundred eleven thousand, seven hundred three".