28310201 has 2 divisors, whose sum is σ = 28310202. Its totient is φ = 28310200.

The previous prime is 28310197. The next prime is 28310251. The reversal of 28310201 is 10201382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25999801 + 2310400 = 5099^2 + 1520^2 .

It is a cyclic number.

It is not a de Polignac number, because 28310201 - 2² = 28310197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28310201.

It is not a weakly prime, because it can be changed into another prime (28310251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14155100 + 14155101.

It is an arithmetic number, because the mean of its divisors is an integer number (14155101).

Almost surely, 2^28310201 is an apocalyptic number.

It is an amenable number.

28310201 is a deficient number, since it is larger than the sum of its proper divisors (1).

28310201 is an equidigital number, since it uses as much as digits as its factorization.

28310201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 28310201 is about 5320.7331261773. The cubic root of 28310201 is about 304.7761539488.

Adding to 28310201 its reverse (10201382), we get a palindrome (38511583).

The spelling of 28310201 in words is "twenty-eight million, three hundred ten thousand, two hundred one".