22000431243 has 16 divisors (see below), whose sum is σ = 33574301696. Its totient is φ = 12552986880.

The previous prime is 22000431217. The next prime is 22000431251. The reversal of 22000431243 is 34213400022.

It is not a de Polignac number, because 22000431243 - 2⁶ = 22000431179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22000431263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 764203 + ... + 792468.

It is an arithmetic number, because the mean of its divisors is an integer number (2098393856).

Almost surely, 2^22000431243 is an apocalyptic number.

22000431243 is a deficient number, since it is larger than the sum of its proper divisors (11573870453).

22000431243 is a wasteful number, since it uses less digits than its factorization.

22000431243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557354.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 22000431243 its reverse (34213400022), we get a palindrome (56213831265).

The spelling of 22000431243 in words is "twenty-two billion, four hundred thirty-one thousand, two hundred forty-three".