256344983 has 8 divisors (see below), whose sum is σ = 264950400. Its totient is φ = 247760640.

The previous prime is 256344961. The next prime is 256345031. The reversal of 256344983 is 389443652.

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 256344983 - 2⁸ = 256344727 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 (556344983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21743 + ... + 31391.

It is an arithmetic number, because the mean of its divisors is an integer number (33118800).

Almost surely, 2^256344983 is an apocalyptic number.

256344983 is a deficient number, since it is larger than the sum of its proper divisors (8605417).

256344983 is an equidigital number, since it uses as much as digits as its factorization.

256344983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10537.

The product of its digits is 622080, while the sum is 44.

The square root of 256344983 is about 16010.7770891984. Note that the first 3 decimals coincide. The cubic root of 256344983 is about 635.2455148337.

The spelling of 256344983 in words is "two hundred fifty-six million, three hundred forty-four thousand, nine hundred eighty-three".