20233213331 has 4 divisors (see below), whose sum is σ = 20885897664. Its totient is φ = 19580529000.

The previous prime is 20233213327. The next prime is 20233213333. The reversal of 20233213331 is 13331233202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20233213331 - 2² = 20233213327 is a prime.

It is a super-2 number, since 2×20233213331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20233213297 and 20233213306.

It is not an unprimeable number, because it can be changed into a prime (20233213333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326342120 + ... + 326342181.

It is an arithmetic number, because the mean of its divisors is an integer number (5221474416).

Almost surely, 2^20233213331 is an apocalyptic number.

20233213331 is a deficient number, since it is larger than the sum of its proper divisors (652684333).

20233213331 is an equidigital number, since it uses as much as digits as its factorization.

20233213331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652684332.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 20233213331 its reverse (13331233202), we get a palindrome (33564446533).

The spelling of 20233213331 in words is "twenty billion, two hundred thirty-three million, two hundred thirteen thousand, three hundred thirty-one".