31330221230201 has 2 divisors, whose sum is σ = 31330221230202. Its totient is φ = 31330221230200.

The previous prime is 31330221230197. The next prime is 31330221230207. The reversal of 31330221230201 is 10203212203313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23416695246400 + 7913525983801 = 4839080^2 + 2813099^2 .

It is a cyclic number.

It is not a de Polignac number, because 31330221230201 - 2² = 31330221230197 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (31330221230207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15665110615100 + 15665110615101.

It is an arithmetic number, because the mean of its divisors is an integer number (15665110615101).

Almost surely, 2^{31330221230201} is an apocalyptic number.

It is an amenable number.

31330221230201 is a deficient number, since it is larger than the sum of its proper divisors (1).

31330221230201 is an equidigital number, since it uses as much as digits as its factorization.

31330221230201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31330221230201 its reverse (10203212203313), we get a palindrome (41533433433514).

The spelling of 31330221230201 in words is "thirty-one trillion, three hundred thirty billion, two hundred twenty-one million, two hundred thirty thousand, two hundred one".