20023332311 has 4 divisors (see below), whose sum is σ = 20042944824. Its totient is φ = 20003719800.

The previous prime is 20023332283. The next prime is 20023332317. The reversal of 20023332311 is 11323332002.

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 20023332311 - 2³⁰ = 18949590487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023332317) 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, 9804725 + ... + 9806766.

It is an arithmetic number, because the mean of its divisors is an integer number (5010736206).

Almost surely, 2^20023332311 is an apocalyptic number.

20023332311 is a deficient number, since it is larger than the sum of its proper divisors (19612513).

20023332311 is a wasteful number, since it uses less digits than its factorization.

20023332311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19612512.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20023332311 its reverse (11323332002), we get a palindrome (31346664313).

The spelling of 20023332311 in words is "twenty billion, twenty-three million, three hundred thirty-two thousand, three hundred eleven".