31304201 has 2 divisors, whose sum is σ = 31304202. Its totient is φ = 31304200.

The previous prime is 31304179. The next prime is 31304227. The reversal of 31304201 is 10240313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18913801 + 12390400 = 4349^2 + 3520^2 .

It is a cyclic number.

It is not a de Polignac number, because 31304201 - 2¹⁰ = 31303177 is a prime.

It is not a weakly prime, because it can be changed into another prime (31304261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15652100 + 15652101.

It is an arithmetic number, because the mean of its divisors is an integer number (15652101).

Almost surely, 2^31304201 is an apocalyptic number.

It is an amenable number.

31304201 is a deficient number, since it is larger than the sum of its proper divisors (1).

31304201 is an equidigital number, since it uses as much as digits as its factorization.

31304201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 31304201 is about 5595.0157283068. The cubic root of 31304201 is about 315.1622612416.

Adding to 31304201 its reverse (10240313), we get a palindrome (41544514).

The spelling of 31304201 in words is "thirty-one million, three hundred four thousand, two hundred one".