290342263 has 2 divisors, whose sum is σ = 290342264. Its totient is φ = 290342262.

The previous prime is 290342231. The next prime is 290342291. The reversal of 290342263 is 362243092.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 290342263 - 2⁵ = 290342231 is a prime.

It is a super-2 number, since 2×290342263² = 168597259367922338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (290312263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145171131 + 145171132.

It is an arithmetic number, because the mean of its divisors is an integer number (145171132).

Almost surely, 2^290342263 is an apocalyptic number.

290342263 is a deficient number, since it is larger than the sum of its proper divisors (1).

290342263 is an equidigital number, since it uses as much as digits as its factorization.

290342263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 290342263 is about 17039.4325903183. The cubic root of 290342263 is about 662.1708918592.

The spelling of 290342263 in words is "two hundred ninety million, three hundred forty-two thousand, two hundred sixty-three".