256144133 has 8 divisors (see below), whose sum is σ = 293004480. Its totient is φ = 219350880.

The previous prime is 256144127. The next prime is 256144139. The reversal of 256144133 is 331441652.

It is an interprime number because it is at equal distance from previous prime (256144127) and next prime (256144139).

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

It is not a de Polignac number, because 256144133 - 2¹⁴ = 256127749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256144096 and 256144105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256144139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8303 + ... + 24108.

It is an arithmetic number, because the mean of its divisors is an integer number (36625560).

Almost surely, 2^256144133 is an apocalyptic number.

It is an amenable number.

256144133 is a deficient number, since it is larger than the sum of its proper divisors (36860347).

256144133 is a wasteful number, since it uses less digits than its factorization.

256144133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33547.

The product of its digits is 8640, while the sum is 29.

The square root of 256144133 is about 16004.5035224464. The cubic root of 256144133 is about 635.0795634697.

Adding to 256144133 its reverse (331441652), we get a palindrome (587585785).

The spelling of 256144133 in words is "two hundred fifty-six million, one hundred forty-four thousand, one hundred thirty-three".