256036903 has 2 divisors, whose sum is σ = 256036904. Its totient is φ = 256036902.

The previous prime is 256036889. The next prime is 256036927. The reversal of 256036903 is 309630652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256036903 - 2¹³ = 256028711 is a prime.

It is a super-3 number, since 3×256036903³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256036933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128018451 + 128018452.

It is an arithmetic number, because the mean of its divisors is an integer number (128018452).

Almost surely, 2^256036903 is an apocalyptic number.

256036903 is a deficient number, since it is larger than the sum of its proper divisors (1).

256036903 is an equidigital number, since it uses as much as digits as its factorization.

256036903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 34.

The square root of 256036903 is about 16001.1531771932. The cubic root of 256036903 is about 634.9909296656.

The spelling of 256036903 in words is "two hundred fifty-six million, thirty-six thousand, nine hundred three".