257848231 has 8 divisors (see below), whose sum is σ = 277644240. Its totient is φ = 238566528.

The previous prime is 257848229. The next prime is 257848237. The reversal of 257848231 is 132848752.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 257848231 - 2¹ = 257848229 is a prime.

It is a super-2 number, since 2×257848231² = 132971420459658722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257848237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127536 + ... + 129541.

It is an arithmetic number, because the mean of its divisors is an integer number (34705530).

Almost surely, 2^257848231 is an apocalyptic number.

257848231 is a deficient number, since it is larger than the sum of its proper divisors (19796009).

257848231 is a wasteful number, since it uses less digits than its factorization.

257848231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257153.

The product of its digits is 107520, while the sum is 40.

The square root of 257848231 is about 16057.6533466133. The cubic root of 257848231 is about 636.4848225982.

The spelling of 257848231 in words is "two hundred fifty-seven million, eight hundred forty-eight thousand, two hundred thirty-one".