20331211230 has 96 divisors (see below), whose sum is σ = 57696312960. Its totient is φ = 4926248640.

The previous prime is 20331211207. The next prime is 20331211247. The reversal of 20331211230 is 3211213302.

It is a super-2 number, since 2×20331211230² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2549229 + ... + 2557191.

It is an arithmetic number, because the mean of its divisors is an integer number (601003260).

Almost surely, 2^20331211230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20331211230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28848156480).

20331211230 is an abundant number, since it is smaller than the sum of its proper divisors (37365101730).

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

20331211230 is a wasteful number, since it uses less digits than its factorization.

20331211230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10566 (or 10563 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20331211230 its reverse (3211213302), we get a palindrome (23542424532).

The spelling of 20331211230 in words is "twenty billion, three hundred thirty-one million, two hundred eleven thousand, two hundred thirty".