20224004431 has 4 divisors (see below), whose sum is σ = 20236912192. Its totient is φ = 20211096672.

The previous prime is 20224004429. The next prime is 20224004447. The reversal of 20224004431 is 13440042202.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20224004431 - 2¹ = 20224004429 is a prime.

It is a super-2 number, since 2×20224004431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20224004231) 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 3 ways as a sum of consecutive naturals, for example, 6451530 + ... + 6454663.

It is an arithmetic number, because the mean of its divisors is an integer number (5059228048).

Almost surely, 2^20224004431 is an apocalyptic number.

20224004431 is a deficient number, since it is larger than the sum of its proper divisors (12907761).

20224004431 is a wasteful number, since it uses less digits than its factorization.

20224004431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12907760.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 20224004431 its reverse (13440042202), we get a palindrome (33664046633).

The spelling of 20224004431 in words is "twenty billion, two hundred twenty-four million, four thousand, four hundred thirty-one".