22031223 has 4 divisors (see below), whose sum is σ = 29374968. Its totient is φ = 14687480.

The previous prime is 22031209. The next prime is 22031237. The reversal of 22031223 is 32213022.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (22031209) and next prime (22031237).

It is a cyclic number.

It is not a de Polignac number, because 22031223 - 2⁶ = 22031159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22031293) 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 in 3 ways as a sum of consecutive naturals, for example, 3671868 + ... + 3671873.

It is an arithmetic number, because the mean of its divisors is an integer number (7343742).

Almost surely, 2^22031223 is an apocalyptic number.

22031223 is a deficient number, since it is larger than the sum of its proper divisors (7343745).

22031223 is an equidigital number, since it uses as much as digits as its factorization.

22031223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7343744.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 22031223 is about 4693.7429627111. The cubic root of 22031223 is about 280.3364280930.

Adding to 22031223 its reverse (32213022), we get a palindrome (54244245).

The spelling of 22031223 in words is "twenty-two million, thirty-one thousand, two hundred twenty-three".