22440443431 has 8 divisors (see below), whose sum is σ = 25657232544. Its totient is φ = 19226407200.

The previous prime is 22440443423. The next prime is 22440443437. The reversal of 22440443431 is 13434404422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22440443431 - 2³ = 22440443423 is a prime.

It is a super-2 number, since 2×22440443431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22440443393 and 22440443402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22440443437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670720 + ... + 703381.

It is an arithmetic number, because the mean of its divisors is an integer number (3207154068).

Almost surely, 2^22440443431 is an apocalyptic number.

22440443431 is a deficient number, since it is larger than the sum of its proper divisors (3216789113).

22440443431 is a wasteful number, since it uses less digits than its factorization.

22440443431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376441.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 22440443431 its reverse (13434404422), we get a palindrome (35874847853).

The spelling of 22440443431 in words is "twenty-two billion, four hundred forty million, four hundred forty-three thousand, four hundred thirty-one".