256164203 has 4 divisors (see below), whose sum is σ = 256220688. Its totient is φ = 256107720.

The previous prime is 256164197. The next prime is 256164217. The reversal of 256164203 is 302461652.

256164203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 256164203 - 2¹⁴ = 256147819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256161203) 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, 20783 + ... + 30728.

It is an arithmetic number, because the mean of its divisors is an integer number (64055172).

Almost surely, 2^256164203 is an apocalyptic number.

256164203 is a deficient number, since it is larger than the sum of its proper divisors (56485).

256164203 is an equidigital number, since it uses as much as digits as its factorization.

256164203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56484.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 256164203 is about 16005.1305211798. The cubic root of 256164203 is about 635.0961501128.

The spelling of 256164203 in words is "two hundred fifty-six million, one hundred sixty-four thousand, two hundred three".