256326523 has 8 divisors (see below), whose sum is σ = 260745728. Its totient is φ = 251924904.

The previous prime is 256326509. The next prime is 256326529. The reversal of 256326523 is 325623652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256326523 - 2¹³ = 256318331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256326529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26890 + ... + 35152.

It is an arithmetic number, because the mean of its divisors is an integer number (32593216).

Almost surely, 2^256326523 is an apocalyptic number.

256326523 is a deficient number, since it is larger than the sum of its proper divisors (4419205).

256326523 is an equidigital number, since it uses as much as digits as its factorization.

256326523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8793.

The product of its digits is 64800, while the sum is 34.

The square root of 256326523 is about 16010.2005921225. The cubic root of 256326523 is about 635.2302659641.

The spelling of 256326523 in words is "two hundred fifty-six million, three hundred twenty-six thousand, five hundred twenty-three".