256103201 has 2 divisors, whose sum is σ = 256103202. Its totient is φ = 256103200.

The previous prime is 256103167. The next prime is 256103209. The reversal of 256103201 is 102301652.

256103201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148254976 + 107848225 = 12176^2 + 10385^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256103201 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (256103209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128051600 + 128051601.

It is an arithmetic number, because the mean of its divisors is an integer number (128051601).

Almost surely, 2^256103201 is an apocalyptic number.

It is an amenable number.

256103201 is a deficient number, since it is larger than the sum of its proper divisors (1).

256103201 is an equidigital number, since it uses as much as digits as its factorization.

256103201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 256103201 is about 16003.2247062897. The cubic root of 256103201 is about 635.0457329577.

Adding to 256103201 its reverse (102301652), we get a palindrome (358404853).

It can be divided in two parts, 25610 and 3201, that multiplied together give a triangular number (81977610 = T₁₂₈₀₄).

The spelling of 256103201 in words is "two hundred fifty-six million, one hundred three thousand, two hundred one".