321000201023 has 4 divisors (see below), whose sum is σ = 321001398360. Its totient is φ = 320999003688.

The previous prime is 321000200993. The next prime is 321000201029. The reversal of 321000201023 is 320102000123.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 321000201023 - 2¹² = 321000196927 is a prime.

It is a super-2 number, since 2×321000201023² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321000200989 and 321000201007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321000201029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9236 + ... + 801302.

It is an arithmetic number, because the mean of its divisors is an integer number (80250349590).

Almost surely, 2^321000201023 is an apocalyptic number.

321000201023 is a deficient number, since it is larger than the sum of its proper divisors (1197337).

321000201023 is an equidigital number, since it uses as much as digits as its factorization.

321000201023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197336.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 321000201023 its reverse (320102000123), we get a palindrome (641102201146).

Subtracting from 321000201023 its reverse (320102000123), we obtain a square (898200900 = 29970²).

The spelling of 321000201023 in words is "three hundred twenty-one billion, two hundred one thousand, twenty-three".