20312233420 has 24 divisors (see below), whose sum is σ = 45164849184. Its totient is φ = 7646958336.

The previous prime is 20312233379. The next prime is 20312233457. The reversal of 20312233420 is 2433221302.

It is a junction number, because it is equal to n+sod(n) for n = 20312233391 and 20312233400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29870592 + ... + 29871271.

It is an arithmetic number, because the mean of its divisors is an integer number (1881868716).

Almost surely, 2^20312233420 is an apocalyptic number.

20312233420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20312233420 is an abundant number, since it is smaller than the sum of its proper divisors (24852615764).

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

20312233420 is a wasteful number, since it uses less digits than its factorization.

20312233420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59741889 (or 59741887 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20312233420 its reverse (2433221302), we get a palindrome (22745454722).

The spelling of 20312233420 in words is "twenty billion, three hundred twelve million, two hundred thirty-three thousand, four hundred twenty".