290233 has 2 divisors, whose sum is σ = 290234. Its totient is φ = 290232.

The previous prime is 290219. The next prime is 290243. The reversal of 290233 is 332092.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 278784 + 11449 = 528^2 + 107^2 .

It is a cyclic number.

It is not a de Polignac number, because 290233 - 2⁵ = 290201 is a prime.

It is equal to p₂₅₂₄₆ and since 290233 and 25246 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 290233.

It is not a weakly prime, because it can be changed into another prime (290243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145116 + 145117.

It is an arithmetic number, because the mean of its divisors is an integer number (145117).

2²⁹⁰²³³ is an apocalyptic number.

It is an amenable number.

290233 is a deficient number, since it is larger than the sum of its proper divisors (1).

290233 is an equidigital number, since it uses as much as digits as its factorization.

290233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 290233 is about 538.7327723464. The cubic root of 290233 is about 66.2087817657.

The spelling of 290233 in words is "two hundred ninety thousand, two hundred thirty-three".