256206233 has 2 divisors, whose sum is σ = 256206234. Its totient is φ = 256206232.

The previous prime is 256206229. The next prime is 256206281. The reversal of 256206233 is 332602652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 256096009 + 110224 = 16003^2 + 332^2 .

It is a cyclic number.

It is not a de Polignac number, because 256206233 - 2² = 256206229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256206196 and 256206205.

It is not a weakly prime, because it can be changed into another prime (256200233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128103116 + 128103117.

It is an arithmetic number, because the mean of its divisors is an integer number (128103117).

Almost surely, 2^256206233 is an apocalyptic number.

It is an amenable number.

256206233 is a deficient number, since it is larger than the sum of its proper divisors (1).

256206233 is an equidigital number, since it uses as much as digits as its factorization.

256206233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 256206233 is about 16006.4434837974. The cubic root of 256206233 is about 635.1308825632.

Adding to 256206233 its reverse (332602652), we get a palindrome (588808885).

The spelling of 256206233 in words is "two hundred fifty-six million, two hundred six thousand, two hundred thirty-three".