20380112321 has 4 divisors (see below), whose sum is σ = 20387890644. Its totient is φ = 20372334000.

The previous prime is 20380112293. The next prime is 20380112323. The reversal of 20380112321 is 12321108302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18424261696 + 1955850625 = 135736^2 + 44225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20380112321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20380112323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3885230 + ... + 3890471.

It is an arithmetic number, because the mean of its divisors is an integer number (5096972661).

Almost surely, 2^20380112321 is an apocalyptic number.

It is an amenable number.

20380112321 is a deficient number, since it is larger than the sum of its proper divisors (7778323).

20380112321 is an equidigital number, since it uses as much as digits as its factorization.

20380112321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7778322.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 20380112321 in words is "twenty billion, three hundred eighty million, one hundred twelve thousand, three hundred twenty-one".