20320330231 has 8 divisors (see below), whose sum is σ = 21568256640. Its totient is φ = 19078249728.

The previous prime is 20320330229. The next prime is 20320330253. The reversal of 20320330231 is 13203302302.

It is a happy number.

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

It is not a de Polignac number, because 20320330231 - 2¹ = 20320330229 is a prime.

It is a super-2 number, since 2×20320330231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20320330199 and 20320330208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320330531) 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, 1454311 + ... + 1468216.

It is an arithmetic number, because the mean of its divisors is an integer number (2696032080).

Almost surely, 2^20320330231 is an apocalyptic number.

20320330231 is a deficient number, since it is larger than the sum of its proper divisors (1247926409).

20320330231 is a wasteful number, since it uses less digits than its factorization.

20320330231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2922953.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 20320330231 its reverse (13203302302), we get a palindrome (33523632533).

The spelling of 20320330231 in words is "twenty billion, three hundred twenty million, three hundred thirty thousand, two hundred thirty-one".