256231803 has 16 divisors (see below), whose sum is σ = 363571200. Its totient is φ = 159958656.

The previous prime is 256231751. The next prime is 256231813. The reversal of 256231803 is 308132652.

It is not a de Polignac number, because 256231803 - 2⁹ = 256231291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256231813) 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, 2475 + ... + 22772.

It is an arithmetic number, because the mean of its divisors is an integer number (22723200).

Almost surely, 2^256231803 is an apocalyptic number.

256231803 is a deficient number, since it is larger than the sum of its proper divisors (107339397).

256231803 is a wasteful number, since it uses less digits than its factorization.

256231803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25466.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 256231803 is about 16007.2422047022. The cubic root of 256231803 is about 635.1520110583.

The spelling of 256231803 in words is "two hundred fifty-six million, two hundred thirty-one thousand, eight hundred three".