210323020073 has 2 divisors, whose sum is σ = 210323020074. Its totient is φ = 210323020072.

The previous prime is 210323020009. The next prime is 210323020099. The reversal of 210323020073 is 370020323012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206835763264 + 3487256809 = 454792^2 + 59053^2 .

It is a cyclic number.

It is not a de Polignac number, because 210323020073 - 2⁶ = 210323020009 is a prime.

It is not a weakly prime, because it can be changed into another prime (210323020573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105161510036 + 105161510037.

It is an arithmetic number, because the mean of its divisors is an integer number (105161510037).

Almost surely, 2^210323020073 is an apocalyptic number.

It is an amenable number.

210323020073 is a deficient number, since it is larger than the sum of its proper divisors (1).

210323020073 is an equidigital number, since it uses as much as digits as its factorization.

210323020073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 23.

Adding to 210323020073 its reverse (370020323012), we get a palindrome (580343343085).

The spelling of 210323020073 in words is "two hundred ten billion, three hundred twenty-three million, twenty thousand, seventy-three".