256232223 has 18 divisors (see below), whose sum is σ = 400775856. Its totient is φ = 157680432.

The previous prime is 256232111. The next prime is 256232237. The reversal of 256232223 is 322232652.

It is not a de Polignac number, because 256232223 - 2¹² = 256228127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256232243) 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 17 ways as a sum of consecutive naturals, for example, 82711 + ... + 85752.

Almost surely, 2^256232223 is an apocalyptic number.

256232223 is a deficient number, since it is larger than the sum of its proper divisors (144543633).

256232223 is a wasteful number, since it uses less digits than its factorization.

256232223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168495 (or 168479 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 256232223 is about 16007.2553237587. The cubic root of 256232223 is about 635.1523580926.

Adding to 256232223 its reverse (322232652), we get a palindrome (578464875).

The spelling of 256232223 in words is "two hundred fifty-six million, two hundred thirty-two thousand, two hundred twenty-three".