202311320321 has 16 divisors (see below), whose sum is σ = 225449941248. Its totient is φ = 180005235600.

The previous prime is 202311320261. The next prime is 202311320347. The reversal of 202311320321 is 123023113202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202311320321 is a prime.

It is a super-4 number, since 4×202311320321⁴ (a number of 46 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202311320293 and 202311320302.

It is not an unprimeable number, because it can be changed into a prime (202311320381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 937775 + ... + 1133156.

It is an arithmetic number, because the mean of its divisors is an integer number (14090621328).

Almost surely, 2^202311320321 is an apocalyptic number.

It is an amenable number.

202311320321 is a deficient number, since it is larger than the sum of its proper divisors (23138620927).

202311320321 is a wasteful number, since it uses less digits than its factorization.

202311320321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2071132.

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

Adding to 202311320321 its reverse (123023113202), we get a palindrome (325334433523).

The spelling of 202311320321 in words is "two hundred two billion, three hundred eleven million, three hundred twenty thousand, three hundred twenty-one".