23031222 has 16 divisors (see below), whose sum is σ = 47043072. Its totient is φ = 7513640.

The previous prime is 23031167. The next prime is 23031227. The reversal of 23031222 is 22213032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23031227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40554 + ... + 41117.

It is an arithmetic number, because the mean of its divisors is an integer number (2940192).

Almost surely, 2^23031222 is an apocalyptic number.

23031222 is an abundant number, since it is smaller than the sum of its proper divisors (24011850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23031222 is a wasteful number, since it uses less digits than its factorization.

23031222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81723.

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

The square root of 23031222 is about 4799.0855378916. The cubic root of 23031222 is about 284.5153227210.

Adding to 23031222 its reverse (22213032), we get a palindrome (45244254).

The spelling of 23031222 in words is "twenty-three million, thirty-one thousand, two hundred twenty-two".