202340452321 has 4 divisors (see below), whose sum is σ = 231246231232. Its totient is φ = 173434673412.

The previous prime is 202340452313. The next prime is 202340452331. The reversal of 202340452321 is 123254043202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 202340452321 - 2³ = 202340452313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202340452321.

It is not an unprimeable number, because it can be changed into a prime (202340452331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14452889445 + ... + 14452889458.

It is an arithmetic number, because the mean of its divisors is an integer number (57811557808).

Almost surely, 2^202340452321 is an apocalyptic number.

It is an amenable number.

202340452321 is a deficient number, since it is larger than the sum of its proper divisors (28905778911).

202340452321 is an equidigital number, since it uses as much as digits as its factorization.

202340452321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28905778910.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 202340452321 its reverse (123254043202), we get a palindrome (325594495523).

The spelling of 202340452321 in words is "two hundred two billion, three hundred forty million, four hundred fifty-two thousand, three hundred twenty-one".