20312203330 has 32 divisors (see below), whose sum is σ = 38727454320. Its totient is φ = 7644026880.

The previous prime is 20312203291. The next prime is 20312203393. The reversal of 20312203330 is 3330221302.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 16921586889 + 3390616441 = 130083^2 + 58229^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20312203298 and 20312203307.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 452710 + ... + 495550.

Almost surely, 2^20312203330 is an apocalyptic number.

20312203330 is a deficient number, since it is larger than the sum of its proper divisors (18415250990).

20312203330 is a wasteful number, since it uses less digits than its factorization.

20312203330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45654.

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

Adding to 20312203330 its reverse (3330221302), we get a palindrome (23642424632).

The spelling of 20312203330 in words is "twenty billion, three hundred twelve million, two hundred three thousand, three hundred thirty".