22033434431 has 4 divisors (see below), whose sum is σ = 22281001200. Its totient is φ = 21785867664.

The previous prime is 22033434403. The next prime is 22033434491. The reversal of 22033434431 is 13443433022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22033434431 is a prime.

It is a super-2 number, since 2×22033434431² (a number of 21 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 = 22033434394 and 22033434403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22033434491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123783251 + ... + 123783428.

It is an arithmetic number, because the mean of its divisors is an integer number (5570250300).

Almost surely, 2^22033434431 is an apocalyptic number.

22033434431 is a deficient number, since it is larger than the sum of its proper divisors (247566769).

22033434431 is an equidigital number, since it uses as much as digits as its factorization.

22033434431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247566768.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 22033434431 its reverse (13443433022), we get a palindrome (35476867453).

The spelling of 22033434431 in words is "twenty-two billion, thirty-three million, four hundred thirty-four thousand, four hundred thirty-one".