202023023311 has 4 divisors (see below), whose sum is σ = 202024332000. Its totient is φ = 202021714624.

The previous prime is 202023023291. The next prime is 202023023327. The reversal of 202023023311 is 113320320202.

202023023311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113320320202 = 2 ⋅56660160101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202023023311 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 (202023023711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386146 + ... + 743743.

It is an arithmetic number, because the mean of its divisors is an integer number (50506083000).

Almost surely, 2^202023023311 is an apocalyptic number.

202023023311 is a deficient number, since it is larger than the sum of its proper divisors (1308689).

202023023311 is a wasteful number, since it uses less digits than its factorization.

202023023311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308688.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 202023023311 its reverse (113320320202), we get a palindrome (315343343513).

The spelling of 202023023311 in words is "two hundred two billion, twenty-three million, twenty-three thousand, three hundred eleven".