20123202320 has 240 divisors, whose sum is σ = 53453245440. Its totient is φ = 7001938944.

The previous prime is 20123202317. The next prime is 20123202349. The reversal of 20123202320 is 2320232102.

It is a super-2 number, since 2×20123202320² (a number of 21 digits) contains 22 as substring.

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 47 ways as a sum of consecutive naturals, for example, 43462409 + ... + 43462871.

It is an arithmetic number, because the mean of its divisors is an integer number (222721856).

Almost surely, 2^20123202320 is an apocalyptic number.

20123202320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20123202320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26726622720).

20123202320 is an abundant number, since it is smaller than the sum of its proper divisors (33330043120).

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

20123202320 is a wasteful number, since it uses less digits than its factorization.

20123202320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614 (or 585 counting only the distinct ones).

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

Adding to 20123202320 its reverse (2320232102), we get a palindrome (22443434422).

The spelling of 20123202320 in words is "twenty billion, one hundred twenty-three million, two hundred two thousand, three hundred twenty".