256323433 has 16 divisors (see below), whose sum is σ = 287115840. Its totient is φ = 227404800.

The previous prime is 256323427. The next prime is 256323439. The reversal of 256323433 is 334323652.

It is an interprime number because it is at equal distance from previous prime (256323427) and next prime (256323439).

It is a cyclic number.

It is not a de Polignac number, because 256323433 - 2¹⁷ = 256192361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256323395 and 256323404.

It is not an unprimeable number, because it can be changed into a prime (256323439) 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 15 ways as a sum of consecutive naturals, for example, 66273 + ... + 70033.

It is an arithmetic number, because the mean of its divisors is an integer number (17944740).

Almost surely, 2^256323433 is an apocalyptic number.

It is an amenable number.

256323433 is a deficient number, since it is larger than the sum of its proper divisors (30792407).

256323433 is a wasteful number, since it uses less digits than its factorization.

256323433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4008.

The product of its digits is 38880, while the sum is 31.

The square root of 256323433 is about 16010.1040908546. The cubic root of 256323433 is about 635.2277134003.

The spelling of 256323433 in words is "two hundred fifty-six million, three hundred twenty-three thousand, four hundred thirty-three".