2243623 has 2 divisors, whose sum is σ = 2243624. Its totient is φ = 2243622.

The previous prime is 2243621. The next prime is 2243663. The reversal of 2243623 is 3263422.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2243623 - 2¹ = 2243621 is a prime.

It is a super-2 number, since 2×2243623² = 10067688332258, which contains 22 as substring.

Together with 2243621, it forms a pair of twin primes.

2243623 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2243594 and 2243603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2243621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121811 + 1121812.

It is an arithmetic number, because the mean of its divisors is an integer number (1121812).

2^2243623 is an apocalyptic number.

2243623 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243623 is an equidigital number, since it uses as much as digits as its factorization.

2243623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 22.

The square root of 2243623 is about 1497.8728250422. The cubic root of 2243623 is about 130.9131565125.

The spelling of 2243623 in words is "two million, two hundred forty-three thousand, six hundred twenty-three".