20320031224 has 16 divisors (see below), whose sum is σ = 38117787120. Its totient is φ = 10155288000.

The previous prime is 20320031203. The next prime is 20320031239. The reversal of 20320031224 is 42213002302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 572652 + ... + 607099.

It is an arithmetic number, because the mean of its divisors is an integer number (2382361695).

Almost surely, 2^20320031224 is an apocalyptic number.

It is an amenable number.

20320031224 is a deficient number, since it is larger than the sum of its proper divisors (17797755896).

20320031224 is a wasteful number, since it uses less digits than its factorization.

20320031224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181910 (or 1181906 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20320031224 its reverse (42213002302), we get a palindrome (62533033526).

The spelling of 20320031224 in words is "twenty billion, three hundred twenty million, thirty-one thousand, two hundred twenty-four".