202400345321 has 2 divisors, whose sum is σ = 202400345322. Its totient is φ = 202400345320.

The previous prime is 202400345317. The next prime is 202400345327. The reversal of 202400345321 is 123543004202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142705639696 + 59694705625 = 377764^2 + 244325^2 .

It is a cyclic number.

It is not a de Polignac number, because 202400345321 - 2² = 202400345317 is a prime.

It is not a weakly prime, because it can be changed into another prime (202400345327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101200172660 + 101200172661.

It is an arithmetic number, because the mean of its divisors is an integer number (101200172661).

Almost surely, 2^202400345321 is an apocalyptic number.

It is an amenable number.

202400345321 is a deficient number, since it is larger than the sum of its proper divisors (1).

202400345321 is an equidigital number, since it uses as much as digits as its factorization.

202400345321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 202400345321 its reverse (123543004202), we get a palindrome (325943349523).

The spelling of 202400345321 in words is "two hundred two billion, four hundred million, three hundred forty-five thousand, three hundred twenty-one".