12320220331 has 8 divisors (see below), whose sum is σ = 13731515280. Its totient is φ = 10985211648.

The previous prime is 12320220317. The next prime is 12320220347. The reversal of 12320220331 is 13302202321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12320220331 - 2²⁵ = 12286665899 is a prime.

It is a super-2 number, since 2×12320220331² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12320220299 and 12320220308.

It is not an unprimeable number, because it can be changed into a prime (12320220301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19071226 + ... + 19071871.

It is an arithmetic number, because the mean of its divisors is an integer number (1716439410).

Almost surely, 2^12320220331 is an apocalyptic number.

12320220331 is a deficient number, since it is larger than the sum of its proper divisors (1411294949).

12320220331 is a wasteful number, since it uses less digits than its factorization.

12320220331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38143133.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 12320220331 its reverse (13302202321), we get a palindrome (25622422652).

The spelling of 12320220331 in words is "twelve billion, three hundred twenty million, two hundred twenty thousand, three hundred thirty-one".