23431222 has 4 divisors (see below), whose sum is σ = 35146836. Its totient is φ = 11715610.

The previous prime is 23431211. The next prime is 23431231. The reversal of 23431222 is 22213432.

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

It is a self number, because there is not a number n which added to its sum of digits gives 23431222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5857804 + ... + 5857807.

It is an arithmetic number, because the mean of its divisors is an integer number (8786709).

Almost surely, 2^23431222 is an apocalyptic number.

23431222 is a deficient number, since it is larger than the sum of its proper divisors (11715614).

23431222 is a wasteful number, since it uses less digits than its factorization.

23431222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11715613.

The product of its digits is 576, while the sum is 19.

The square root of 23431222 is about 4840.5807502819. The cubic root of 23431222 is about 286.1530062996.

Adding to 23431222 its reverse (22213432), we get a palindrome (45644654).

It can be divided in two parts, 23431 and 222, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 23431222 in words is "twenty-three million, four hundred thirty-one thousand, two hundred twenty-two".