22431343 has 16 divisors (see below), whose sum is σ = 26000640. Its totient is φ = 19297080.

The previous prime is 22431329. The next prime is 22431359. The reversal of 22431343 is 34313422.

It is a happy number.

It is not a de Polignac number, because 22431343 - 2⁹ = 22430831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22431323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24846 + ... + 25732.

It is an arithmetic number, because the mean of its divisors is an integer number (1625040).

Almost surely, 2^22431343 is an apocalyptic number.

22431343 is a deficient number, since it is larger than the sum of its proper divisors (3569297).

22431343 is an equidigital number, since it uses as much as digits as its factorization.

22431343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939 (or 917 counting only the distinct ones).

The product of its digits is 1728, while the sum is 22.

The square root of 22431343 is about 4736.1738777203. The cubic root of 22431343 is about 282.0233662713.

Adding to 22431343 its reverse (34313422), we get a palindrome (56744765).

It can be divided in two parts, 22 and 431343, that multiplied together give a triangular number (9489546 = T₄₃₅₆).

The spelling of 22431343 in words is "twenty-two million, four hundred thirty-one thousand, three hundred forty-three".