256431741 has 8 divisors (see below), whose sum is σ = 341990880. Its totient is φ = 170913552.

The previous prime is 256431701. The next prime is 256431743. The reversal of 256431741 is 147134652.

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

It is not a de Polignac number, because 256431741 - 2¹⁰ = 256430717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256431743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10215 + ... + 24843.

It is an arithmetic number, because the mean of its divisors is an integer number (42748860).

Almost surely, 2^256431741 is an apocalyptic number.

It is an amenable number.

256431741 is a deficient number, since it is larger than the sum of its proper divisors (85559139).

256431741 is a wasteful number, since it uses less digits than its factorization.

256431741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20475.

The product of its digits is 20160, while the sum is 33.

The square root of 256431741 is about 16013.4862225563. The cubic root of 256431741 is about 635.3171714134.

The spelling of 256431741 in words is "two hundred fifty-six million, four hundred thirty-one thousand, seven hundred forty-one".