201602321 has 2 divisors, whose sum is σ = 201602322. Its totient is φ = 201602320.

The previous prime is 201602311. The next prime is 201602327. The reversal of 201602321 is 123206102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191130625 + 10471696 = 13825^2 + 3236^2 .

It is a cyclic number.

It is not a de Polignac number, because 201602321 - 2⁶ = 201602257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201602321.

It is not a weakly prime, because it can be changed into another prime (201602327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100801160 + 100801161.

It is an arithmetic number, because the mean of its divisors is an integer number (100801161).

Almost surely, 2^201602321 is an apocalyptic number.

It is an amenable number.

201602321 is a deficient number, since it is larger than the sum of its proper divisors (1).

201602321 is an equidigital number, since it uses as much as digits as its factorization.

201602321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 201602321 is about 14198.6732126632. The cubic root of 201602321 is about 586.3611337724.

Adding to 201602321 its reverse (123206102), we get a palindrome (324808423).

The spelling of 201602321 in words is "two hundred one million, six hundred two thousand, three hundred twenty-one".