2290231 has 2 divisors, whose sum is σ = 2290232. Its totient is φ = 2290230.

The previous prime is 2290213. The next prime is 2290243. The reversal of 2290231 is 1320922.

It is a happy number.

Together with previous prime (2290213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2290231 is a prime.

It is a super-2 number, since 2×2290231² = 10490316066722, which contains 22 as substring.

2290231 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2290199 and 2290208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2290031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145115 + 1145116.

It is an arithmetic number, because the mean of its divisors is an integer number (1145116).

2^2290231 is an apocalyptic number.

2290231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2290231 is an equidigital number, since it uses as much as digits as its factorization.

2290231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2290231 is about 1513.3509176658. The cubic root of 2290231 is about 131.8134608766.

The spelling of 2290231 in words is "two million, two hundred ninety thousand, two hundred thirty-one".