256227743 has 2 divisors, whose sum is σ = 256227744. Its totient is φ = 256227742.

The previous prime is 256227739. The next prime is 256227761. The reversal of 256227743 is 347722652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256227743 - 2² = 256227739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256227697 and 256227706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256227703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128113871 + 128113872.

It is an arithmetic number, because the mean of its divisors is an integer number (128113872).

Almost surely, 2^256227743 is an apocalyptic number.

256227743 is a deficient number, since it is larger than the sum of its proper divisors (1).

256227743 is an equidigital number, since it uses as much as digits as its factorization.

256227743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 38.

The square root of 256227743 is about 16007.1153866023. The cubic root of 256227743 is about 635.1486563735.

The spelling of 256227743 in words is "two hundred fifty-six million, two hundred twenty-seven thousand, seven hundred forty-three".