20031103230 has 128 divisors (see below), whose sum is σ = 52867634688. Its totient is φ = 4836851712.

The previous prime is 20031103207. The next prime is 20031103241. The reversal of 20031103230 is 3230113002.

It is a super-2 number, since 2×20031103230² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1462494 + ... + 1476126.

It is an arithmetic number, because the mean of its divisors is an integer number (413028396).

Almost surely, 2^20031103230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20031103230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26433817344).

20031103230 is an abundant number, since it is smaller than the sum of its proper divisors (32836531458).

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

20031103230 is a wasteful number, since it uses less digits than its factorization.

20031103230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13770.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 20031103230 its reverse (3230113002), we get a palindrome (23261216232).

The spelling of 20031103230 in words is "twenty billion, thirty-one million, one hundred three thousand, two hundred thirty".