256355203 has 16 divisors (see below), whose sum is σ = 284407200. Its totient is φ = 229533696.

The previous prime is 256355191. The next prime is 256355219. The reversal of 256355203 is 302553652.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256355203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256355243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215376 + ... + 216562.

It is an arithmetic number, because the mean of its divisors is an integer number (17775450).

Almost surely, 2^256355203 is an apocalyptic number.

256355203 is a deficient number, since it is larger than the sum of its proper divisors (28051997).

256355203 is a wasteful number, since it uses less digits than its factorization.

256355203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686.

The product of its (nonzero) digits is 27000, while the sum is 31.

The square root of 256355203 is about 16011.0962460414. The cubic root of 256355203 is about 635.2539567425.

The spelling of 256355203 in words is "two hundred fifty-six million, three hundred fifty-five thousand, two hundred three".