202023311321 has 36 divisors (see below), whose sum is σ = 234135411840. Its totient is φ = 174176140320.

The previous prime is 202023311311. The next prime is 202023311377. The reversal of 202023311321 is 123113320202.

It is not a de Polignac number, because 202023311321 - 2¹⁰ = 202023310297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 202023311293 and 202023311302.

It is not an unprimeable number, because it can be changed into a prime (202023311311) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4308320 + ... + 4354958.

It is an arithmetic number, because the mean of its divisors is an integer number (6503761440).

Almost surely, 2^202023311321 is an apocalyptic number.

It is an amenable number.

202023311321 is a deficient number, since it is larger than the sum of its proper divisors (32112100519).

202023311321 is a wasteful number, since it uses less digits than its factorization.

202023311321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46774 (or 46742 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 202023311321 its reverse (123113320202), we get a palindrome (325136631523).

The spelling of 202023311321 in words is "two hundred two billion, twenty-three million, three hundred eleven thousand, three hundred twenty-one".