23222031 has 24 divisors (see below), whose sum is σ = 36905904. Its totient is φ = 12942720.

The previous prime is 23221997. The next prime is 23222033. The reversal of 23222031 is 13022232.

It is not a de Polignac number, because 23222031 - 2¹¹ = 23219983 is a prime.

It is a super-2 number, since 2×23222031² = 1078525447529922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23222031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23222033) 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 23 ways as a sum of consecutive naturals, for example, 4101 + ... + 7953.

It is an arithmetic number, because the mean of its divisors is an integer number (1537746).

Almost surely, 2^23222031 is an apocalyptic number.

23222031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23222031 is a deficient number, since it is larger than the sum of its proper divisors (13683873).

23222031 is a wasteful number, since it uses less digits than its factorization.

23222031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3911 (or 3904 counting only the distinct ones).

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

The square root of 23222031 is about 4818.9242575496. The cubic root of 23222031 is about 285.2988800524.

Adding to 23222031 its reverse (13022232), we get a palindrome (36244263).

The spelling of 23222031 in words is "twenty-three million, two hundred twenty-two thousand, thirty-one".