22031423 has 2 divisors, whose sum is σ = 22031424. Its totient is φ = 22031422.

The previous prime is 22031419. The next prime is 22031459. The reversal of 22031423 is 32413022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22031423 - 2² = 22031419 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22031413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11015711 + 11015712.

It is an arithmetic number, because the mean of its divisors is an integer number (11015712).

Almost surely, 2^22031423 is an apocalyptic number.

22031423 is a deficient number, since it is larger than the sum of its proper divisors (1).

22031423 is an equidigital number, since it uses as much as digits as its factorization.

22031423 is an evil number, because the sum of its binary digits is even.

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

The square root of 22031423 is about 4693.7642676215. The cubic root of 22031423 is about 280.3372763908.

Adding to 22031423 its reverse (32413022), we get a palindrome (54444445).

The spelling of 22031423 in words is "twenty-two million, thirty-one thousand, four hundred twenty-three".