20123020232 has 64 divisors (see below), whose sum is σ = 45422467200. Its totient is φ = 8164454400.

The previous prime is 20123020199. The next prime is 20123020243. The reversal of 20123020232 is 23202032102.

It is a self number, because there is not a number n which added to its sum of digits gives 20123020232.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1697558 + ... + 1709370.

It is an arithmetic number, because the mean of its divisors is an integer number (709726050).

Almost surely, 2^20123020232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20123020232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22711233600).

20123020232 is an abundant number, since it is smaller than the sum of its proper divisors (25299446968).

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

20123020232 is a wasteful number, since it uses less digits than its factorization.

20123020232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13446 (or 13442 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20123020232 its reverse (23202032102), we get a palindrome (43325052334).

The spelling of 20123020232 in words is "twenty billion, one hundred twenty-three million, twenty thousand, two hundred thirty-two".