20311330332233 has 16 divisors (see below), whose sum is σ = 21388112807040. Its totient is φ = 19235325830400.

The previous prime is 20311330332131. The next prime is 20311330332263. The reversal of 20311330332233 is 33223303311302.

It is a cyclic number.

It is not a de Polignac number, because 20311330332233 - 2¹⁶ = 20311330266697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20311330332196 and 20311330332205.

It is not an unprimeable number, because it can be changed into a prime (20311330332263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 718284491 + ... + 718312767.

It is an arithmetic number, because the mean of its divisors is an integer number (1336757050440).

Almost surely, 2^{20311330332233} is an apocalyptic number.

It is an amenable number.

20311330332233 is a deficient number, since it is larger than the sum of its proper divisors (1076782474807).

20311330332233 is a wasteful number, since it uses less digits than its factorization.

20311330332233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40688.

The product of its (nonzero) digits is 17496, while the sum is 29.

Adding to 20311330332233 its reverse (33223303311302), we get a palindrome (53534633643535).

The spelling of 20311330332233 in words is "twenty trillion, three hundred eleven billion, three hundred thirty million, three hundred thirty-two thousand, two hundred thirty-three".