233256857 has 2 divisors, whose sum is σ = 233256858. Its totient is φ = 233256856.

The previous prime is 233256851. The next prime is 233256887. The reversal of 233256857 is 758652332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228040201 + 5216656 = 15101^2 + 2284^2 .

It is a cyclic number.

It is not a de Polignac number, because 233256857 - 2⁴ = 233256841 is a prime.

It is a super-2 number, since 2×233256857² = 108817522675036898, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (233256851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116628428 + 116628429.

It is an arithmetic number, because the mean of its divisors is an integer number (116628429).

Almost surely, 2^233256857 is an apocalyptic number.

It is an amenable number.

233256857 is a deficient number, since it is larger than the sum of its proper divisors (1).

233256857 is an equidigital number, since it uses as much as digits as its factorization.

233256857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 41.

The square root of 233256857 is about 15272.7488357532. The cubic root of 233256857 is about 615.5709831482.

The spelling of 233256857 in words is "two hundred thirty-three million, two hundred fifty-six thousand, eight hundred fifty-seven".