20323112130 has 96 divisors (see below), whose sum is σ = 55164423600. Its totient is φ = 5184539136.

The previous prime is 20323112123. The next prime is 20323112149. The reversal of 20323112130 is 3121132302.

It can be written as a sum of positive squares in 8 ways, for example, as 13848817761 + 6474294369 = 117681^2 + 80463^2 .

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

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, 248772 + ... + 320208.

Almost surely, 2^20323112130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20323112130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27582211800).

20323112130 is an abundant number, since it is smaller than the sum of its proper divisors (34841311470).

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

20323112130 is a wasteful number, since it uses less digits than its factorization.

20323112130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71588 (or 71585 counting only the distinct ones).

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

Adding to 20323112130 its reverse (3121132302), we get a palindrome (23444244432).

The spelling of 20323112130 in words is "twenty billion, three hundred twenty-three million, one hundred twelve thousand, one hundred thirty".