283221233 has 2 divisors, whose sum is σ = 283221234. Its totient is φ = 283221232.

The previous prime is 283221217. The next prime is 283221247. The reversal of 283221233 is 332122382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 261533584 + 21687649 = 16172^2 + 4657^2 .

It is a cyclic number.

It is not a de Polignac number, because 283221233 - 2⁴ = 283221217 is a prime.

It is not a weakly prime, because it can be changed into another prime (283221833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141610616 + 141610617.

It is an arithmetic number, because the mean of its divisors is an integer number (141610617).

Almost surely, 2^283221233 is an apocalyptic number.

It is an amenable number.

283221233 is a deficient number, since it is larger than the sum of its proper divisors (1).

283221233 is an equidigital number, since it uses as much as digits as its factorization.

283221233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 26.

The square root of 283221233 is about 16829.1780250849. The cubic root of 283221233 is about 656.7124801910.

The spelling of 283221233 in words is "two hundred eighty-three million, two hundred twenty-one thousand, two hundred thirty-three".