256033213 has 8 divisors (see below), whose sum is σ = 258153728. Its totient is φ = 253921824.

The previous prime is 256033181. The next prime is 256033231. The reversal of 256033213 is 312330652.

It is a happy number.

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 256033213 - 2⁵ = 256033181 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 (256033013) 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, 61081 + ... + 65137.

It is an arithmetic number, because the mean of its divisors is an integer number (32269216).

Almost surely, 2^256033213 is an apocalyptic number.

It is an amenable number.

256033213 is a deficient number, since it is larger than the sum of its proper divisors (2120515).

256033213 is a wasteful number, since it uses less digits than its factorization.

256033213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4563.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 256033213 is about 16001.0378725881. The cubic root of 256033213 is about 634.9878791577.

Adding to 256033213 its reverse (312330652), we get a palindrome (568363865).

The spelling of 256033213 in words is "two hundred fifty-six million, thirty-three thousand, two hundred thirteen".