20112320530 has 16 divisors (see below), whose sum is σ = 36207598104. Its totient is φ = 8043723520.

The previous prime is 20112320513. The next prime is 20112320531. The reversal of 20112320530 is 3502321102.

It can be written as a sum of positive squares in 4 ways, for example, as 9640686969 + 10471633561 = 98187^2 + 102331^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20112320498 and 20112320507.

It is not an unprimeable number, because it can be changed into a prime (20112320531) 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, 78841 + ... + 215500.

Almost surely, 2^20112320530 is an apocalyptic number.

20112320530 is a deficient number, since it is larger than the sum of its proper divisors (16095277574).

20112320530 is a wasteful number, since it uses less digits than its factorization.

20112320530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301181.

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 20112320530 its reverse (3502321102), we get a palindrome (23614641632).

The spelling of 20112320530 in words is "twenty billion, one hundred twelve million, three hundred twenty thousand, five hundred thirty".