20312203332 has 24 divisors (see below), whose sum is σ = 47838089376. Its totient is φ = 6707456128.

The previous prime is 20312203291. The next prime is 20312203393. The reversal of 20312203332 is 23330221302.

It is a junction number, because it is equal to n+sod(n) for n = 20312203299 and 20312203308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7908453 + ... + 7911020.

It is an arithmetic number, because the mean of its divisors is an integer number (1993253724).

Almost surely, 2^20312203332 is an apocalyptic number.

It is an amenable number.

20312203332 is an abundant number, since it is smaller than the sum of its proper divisors (27525886044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20312203332 is a wasteful number, since it uses less digits than its factorization.

20312203332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15819587 (or 15819585 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 20312203332 its reverse (23330221302), we get a palindrome (43642424634).

The spelling of 20312203332 in words is "twenty billion, three hundred twelve million, two hundred three thousand, three hundred thirty-two".