202204391 has 2 divisors, whose sum is σ = 202204392. Its totient is φ = 202204390.

The previous prime is 202204369. The next prime is 202204417. The reversal of 202204391 is 193402202.

202204391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202204391 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202204291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101102195 + 101102196.

It is an arithmetic number, because the mean of its divisors is an integer number (101102196).

Almost surely, 2^202204391 is an apocalyptic number.

202204391 is a deficient number, since it is larger than the sum of its proper divisors (1).

202204391 is an equidigital number, since it uses as much as digits as its factorization.

202204391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 202204391 is about 14219.8590358695. The cubic root of 202204391 is about 586.9442613130.

Adding to 202204391 its reverse (193402202), we get a palindrome (395606593).

The spelling of 202204391 in words is "two hundred two million, two hundred four thousand, three hundred ninety-one".