256204323 has 8 divisors (see below), whose sum is σ = 379562000. Its totient is φ = 170802864.

The previous prime is 256204313. The next prime is 256204387. The reversal of 256204323 is 323402652.

256204323 is a `hidden beast` number, since 2 + 5 + 620 + 4 + 32 + 3 = 666.

It is not a de Polignac number, because 256204323 - 2⁶ = 256204259 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 9489049 = 256204323 / (2 + 5 + 6 + 2 + 0 + 4 + 3 + 2 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256204313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4744498 + ... + 4744551.

It is an arithmetic number, because the mean of its divisors is an integer number (47445250).

Almost surely, 2^256204323 is an apocalyptic number.

256204323 is a deficient number, since it is larger than the sum of its proper divisors (123357677).

256204323 is an equidigital number, since it uses as much as digits as its factorization.

256204323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9489058 (or 9489052 counting only the distinct ones).

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

The square root of 256204323 is about 16006.3838202137. The cubic root of 256204323 is about 635.1293042735.

Adding to 256204323 its reverse (323402652), we get a palindrome (579606975).

The spelling of 256204323 in words is "two hundred fifty-six million, two hundred four thousand, three hundred twenty-three".