22140323 has 2 divisors, whose sum is σ = 22140324. Its totient is φ = 22140322.

The previous prime is 22140299. The next prime is 22140343. The reversal of 22140323 is 32304122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22140323 is a prime.

It is not a weakly prime, because it can be changed into another prime (22140343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11070161 + 11070162.

It is an arithmetic number, because the mean of its divisors is an integer number (11070162).

Almost surely, 2^22140323 is an apocalyptic number.

22140323 is a deficient number, since it is larger than the sum of its proper divisors (1).

22140323 is an equidigital number, since it uses as much as digits as its factorization.

22140323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 22140323 is about 4705.3504651620. The cubic root of 22140323 is about 280.7984142017.

Adding to 22140323 its reverse (32304122), we get a palindrome (54444445).

The spelling of 22140323 in words is "twenty-two million, one hundred forty thousand, three hundred twenty-three".