202132231321 has 8 divisors (see below), whose sum is σ = 204464452104. Its totient is φ = 199806499200.

The previous prime is 202132231313. The next prime is 202132231333. The reversal of 202132231321 is 123132231202.

It can be written as a sum of positive squares in 4 ways, for example, as 131423296 + 202000808025 = 11464^2 + 449445^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202132231321 - 2³ = 202132231313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202132231292 and 202132231301.

It is not an unprimeable number, because it can be changed into a prime (202132231351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1559490 + ... + 1684123.

It is an arithmetic number, because the mean of its divisors is an integer number (25558056513).

Almost surely, 2^202132231321 is an apocalyptic number.

It is an amenable number.

202132231321 is a deficient number, since it is larger than the sum of its proper divisors (2332220783).

202132231321 is a wasteful number, since it uses less digits than its factorization.

202132231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3244331.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 202132231321 its reverse (123132231202), we get a palindrome (325264462523).

The spelling of 202132231321 in words is "two hundred two billion, one hundred thirty-two million, two hundred thirty-one thousand, three hundred twenty-one".