285233983 has 2 divisors, whose sum is σ = 285233984. Its totient is φ = 285233982.

The previous prime is 285233959. The next prime is 285234031. The reversal of 285233983 is 389332582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 285233983 - 2⁵ = 285233951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285233953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142616991 + 142616992.

It is an arithmetic number, because the mean of its divisors is an integer number (142616992).

Almost surely, 2^285233983 is an apocalyptic number.

285233983 is a deficient number, since it is larger than the sum of its proper divisors (1).

285233983 is an equidigital number, since it uses as much as digits as its factorization.

285233983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 43.

The square root of 285233983 is about 16888.8715727250. The cubic root of 285233983 is about 658.2644814960.

The spelling of 285233983 in words is "two hundred eighty-five million, two hundred thirty-three thousand, nine hundred eighty-three".