256347000523 has 2 divisors, whose sum is σ = 256347000524. Its totient is φ = 256347000522.

The previous prime is 256347000521. The next prime is 256347000577. The reversal of 256347000523 is 325000743652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256347000523 - 2¹ = 256347000521 is a prime.

Together with 256347000521, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (256347000521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128173500261 + 128173500262.

It is an arithmetic number, because the mean of its divisors is an integer number (128173500262).

Almost surely, 2^256347000523 is an apocalyptic number.

256347000523 is a deficient number, since it is larger than the sum of its proper divisors (1).

256347000523 is an equidigital number, since it uses as much as digits as its factorization.

256347000523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 37.

The spelling of 256347000523 in words is "two hundred fifty-six billion, three hundred forty-seven million, five hundred twenty-three", and thus it is an aban number.