20321111230 has 64 divisors (see below), whose sum is σ = 44188416000. Its totient is φ = 6572821248.

The previous prime is 20321111203. The next prime is 20321111281. The reversal of 20321111230 is 3211112302.

It is a super-2 number, since 2×20321111230² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 285906 + ... + 349834.

It is an arithmetic number, because the mean of its divisors is an integer number (690444000).

Almost surely, 2^20321111230 is an apocalyptic number.

20321111230 is an abundant number, since it is smaller than the sum of its proper divisors (23867304770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20321111230 is a wasteful number, since it uses less digits than its factorization.

20321111230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64201.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20321111230 its reverse (3211112302), we get a palindrome (23532223532).

The spelling of 20321111230 in words is "twenty billion, three hundred twenty-one million, one hundred eleven thousand, two hundred thirty".