256713043 has 2 divisors, whose sum is σ = 256713044. Its totient is φ = 256713042.

The previous prime is 256712957. The next prime is 256713089. The reversal of 256713043 is 340317652.

256713043 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256713043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256712996 and 256713014.

It is not a weakly prime, because it can be changed into another prime (256713343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128356521 + 128356522.

It is an arithmetic number, because the mean of its divisors is an integer number (128356522).

Almost surely, 2^256713043 is an apocalyptic number.

256713043 is a deficient number, since it is larger than the sum of its proper divisors (1).

256713043 is an equidigital number, since it uses as much as digits as its factorization.

256713043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 256713043 is about 16022.2670992591. The cubic root of 256713043 is about 635.5493978406.

The spelling of 256713043 in words is "two hundred fifty-six million, seven hundred thirteen thousand, forty-three".