256034231 has 4 divisors (see below), whose sum is σ = 257903232. Its totient is φ = 254165232.

The previous prime is 256034227. The next prime is 256034267. The reversal of 256034231 is 132430652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256034231 - 2² = 256034227 is a prime.

It is a super-2 number, since 2×256034231² = 131107054887522722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256034231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256034281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 934295 + ... + 934568.

It is an arithmetic number, because the mean of its divisors is an integer number (64475808).

Almost surely, 2^256034231 is an apocalyptic number.

256034231 is a deficient number, since it is larger than the sum of its proper divisors (1869001).

256034231 is a wasteful number, since it uses less digits than its factorization.

256034231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869000.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 256034231 is about 16001.0696829931. The cubic root of 256034231 is about 634.9887207371.

Adding to 256034231 its reverse (132430652), we get a palindrome (388464883).

The spelling of 256034231 in words is "two hundred fifty-six million, thirty-four thousand, two hundred thirty-one".