31322330213 has 2 divisors, whose sum is σ = 31322330214. Its totient is φ = 31322330212.

The previous prime is 31322330201. The next prime is 31322330261. The reversal of 31322330213 is 31203322313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31303163329 + 19166884 = 176927^2 + 4378^2 .

It is a cyclic number.

It is not a de Polignac number, because 31322330213 - 2¹⁸ = 31322068069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31322330113) 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, 15661165106 + 15661165107.

It is an arithmetic number, because the mean of its divisors is an integer number (15661165107).

Almost surely, 2^31322330213 is an apocalyptic number.

It is an amenable number.

31322330213 is a deficient number, since it is larger than the sum of its proper divisors (1).

31322330213 is an equidigital number, since it uses as much as digits as its factorization.

31322330213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 31322330213 its reverse (31203322313), we get a palindrome (62525652526).

The spelling of 31322330213 in words is "thirty-one billion, three hundred twenty-two million, three hundred thirty thousand, two hundred thirteen".