20213423330 has 16 divisors (see below), whose sum is σ = 36882576504. Its totient is φ = 7974610560.

The previous prime is 20213423323. The next prime is 20213423333. The reversal of 20213423330 is 3332431202.

It can be written as a sum of positive squares in 4 ways, for example, as 14175045481 + 6038377849 = 119059^2 + 77707^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20213423296 and 20213423305.

It is not an unprimeable number, because it can be changed into a prime (20213423333) 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, 13844081 + ... + 13845540.

Almost surely, 2^20213423330 is an apocalyptic number.

20213423330 is a deficient number, since it is larger than the sum of its proper divisors (16669153174).

20213423330 is a wasteful number, since it uses less digits than its factorization.

20213423330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27689701.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 20213423330 its reverse (3332431202), we get a palindrome (23545854532).

The spelling of 20213423330 in words is "twenty billion, two hundred thirteen million, four hundred twenty-three thousand, three hundred thirty".