20320312330 has 32 divisors (see below), whose sum is σ = 38735502480. Its totient is φ = 7648542720.

The previous prime is 20320312321. The next prime is 20320312333. The reversal of 20320312330 is 3321302302.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 11039494761 + 9280817569 = 105069^2 + 96337^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20320312298 and 20320312307.

It is not an unprimeable number, because it can be changed into a prime (20320312333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1388250 + ... + 1402810.

Almost surely, 2^20320312330 is an apocalyptic number.

20320312330 is a deficient number, since it is larger than the sum of its proper divisors (18415190150).

20320312330 is a wasteful number, since it uses less digits than its factorization.

20320312330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22794.

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

Adding to 20320312330 its reverse (3321302302), we get a palindrome (23641614632).

The spelling of 20320312330 in words is "twenty billion, three hundred twenty million, three hundred twelve thousand, three hundred thirty".