321303190213 has 2 divisors, whose sum is σ = 321303190214. Its totient is φ = 321303190212.

The previous prime is 321303190211. The next prime is 321303190249. The reversal of 321303190213 is 312091303123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313105155364 + 8198034849 = 559558^2 + 90543^2 .

It is a cyclic number.

It is not a de Polignac number, because 321303190213 - 2¹ = 321303190211 is a prime.

Together with 321303190211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321303190211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160651595106 + 160651595107.

It is an arithmetic number, because the mean of its divisors is an integer number (160651595107).

Almost surely, 2^321303190213 is an apocalyptic number.

It is an amenable number.

321303190213 is a deficient number, since it is larger than the sum of its proper divisors (1).

321303190213 is an equidigital number, since it uses as much as digits as its factorization.

321303190213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 28.

Adding to 321303190213 its reverse (312091303123), we get a palindrome (633394493336).

The spelling of 321303190213 in words is "three hundred twenty-one billion, three hundred three million, one hundred ninety thousand, two hundred thirteen".