256373303 has 2 divisors, whose sum is σ = 256373304. Its totient is φ = 256373302.

The previous prime is 256373197. The next prime is 256373321. The reversal of 256373303 is 303373652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256373303 - 2¹⁰ = 256372279 is a prime.

It is a super-2 number, since 2×256373303² = 131454540982259618, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 256373303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256373323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128186651 + 128186652.

It is an arithmetic number, because the mean of its divisors is an integer number (128186652).

Almost surely, 2^256373303 is an apocalyptic number.

256373303 is a deficient number, since it is larger than the sum of its proper divisors (1).

256373303 is an equidigital number, since it uses as much as digits as its factorization.

256373303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 32.

The square root of 256373303 is about 16011.6614690669. The cubic root of 256373303 is about 635.2689071263.

The spelling of 256373303 in words is "two hundred fifty-six million, three hundred seventy-three thousand, three hundred three".