256333423 has 4 divisors (see below), whose sum is σ = 256588480. Its totient is φ = 256078368.

The previous prime is 256333403. The next prime is 256333453. The reversal of 256333423 is 324333652.

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 256333423 - 2⁵ = 256333391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256333403) 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, 126015 + ... + 128032.

It is an arithmetic number, because the mean of its divisors is an integer number (64147120).

Almost surely, 2^256333423 is an apocalyptic number.

256333423 is a deficient number, since it is larger than the sum of its proper divisors (255057).

256333423 is a wasteful number, since it uses less digits than its factorization.

256333423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255056.

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

The square root of 256333423 is about 16010.4160782910. The cubic root of 256333423 is about 635.2359657898.

The spelling of 256333423 in words is "two hundred fifty-six million, three hundred thirty-three thousand, four hundred twenty-three".