256241036423 has 4 divisors (see below), whose sum is σ = 256572526248. Its totient is φ = 255909546600.

The previous prime is 256241036377. The next prime is 256241036483. The reversal of 256241036423 is 324630142652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256241036423 - 2¹⁰ = 256241035399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256241036483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165743753 + ... + 165745298.

It is an arithmetic number, because the mean of its divisors is an integer number (64143131562).

Almost surely, 2^256241036423 is an apocalyptic number.

256241036423 is a deficient number, since it is larger than the sum of its proper divisors (331489825).

256241036423 is an equidigital number, since it uses as much as digits as its factorization.

256241036423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331489824.

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 256241036423 in words is "two hundred fifty-six billion, two hundred forty-one million, thirty-six thousand, four hundred twenty-three".