256232443 has 4 divisors (see below), whose sum is σ = 267373008. Its totient is φ = 245091880.

The previous prime is 256232413. The next prime is 256232477. The reversal of 256232443 is 344232652.

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 256232443 - 2¹⁷ = 256101371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256232413) 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 3 ways as a sum of consecutive naturals, for example, 5570248 + ... + 5570293.

It is an arithmetic number, because the mean of its divisors is an integer number (66843252).

Almost surely, 2^256232443 is an apocalyptic number.

256232443 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

256232443 is a deficient number, since it is larger than the sum of its proper divisors (11140565).

256232443 is a wasteful number, since it uses less digits than its factorization.

256232443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11140564.

The product of its digits is 34560, while the sum is 31.

The square root of 256232443 is about 16007.2621956411. The cubic root of 256232443 is about 635.1525398724.

The spelling of 256232443 in words is "two hundred fifty-six million, two hundred thirty-two thousand, four hundred forty-three".