31322320201 has 2 divisors, whose sum is σ = 31322320202. Its totient is φ = 31322320200.

The previous prime is 31322320171. The next prime is 31322320217. The reversal of 31322320201 is 10202322313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30347382025 + 974938176 = 174205^2 + 31224^2 .

It is a cyclic number.

It is not a de Polignac number, because 31322320201 - 2⁹ = 31322319689 is a prime.

It is not a weakly prime, because it can be changed into another prime (31322320301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15661160100 + 15661160101.

It is an arithmetic number, because the mean of its divisors is an integer number (15661160101).

Almost surely, 2^31322320201 is an apocalyptic number.

It is an amenable number.

31322320201 is a deficient number, since it is larger than the sum of its proper divisors (1).

31322320201 is an equidigital number, since it uses as much as digits as its factorization.

31322320201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31322320201 its reverse (10202322313), we get a palindrome (41524642514).

The spelling of 31322320201 in words is "thirty-one billion, three hundred twenty-two million, three hundred twenty thousand, two hundred one".