673213201 has 2 divisors, whose sum is σ = 673213202. Its totient is φ = 673213200.

The previous prime is 673213199. The next prime is 673213231. The reversal of 673213201 is 102312376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 599270400 + 73942801 = 24480^2 + 8599^2 .

It is a cyclic number.

It is not a de Polignac number, because 673213201 - 2¹ = 673213199 is a prime.

It is a super-3 number, since 3×673213201³ (a number of 27 digits) contains 333 as substring.

Together with 673213199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (673213231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336606600 + 336606601.

It is an arithmetic number, because the mean of its divisors is an integer number (336606601).

Almost surely, 2^673213201 is an apocalyptic number.

It is an amenable number.

673213201 is a deficient number, since it is larger than the sum of its proper divisors (1).

673213201 is an equidigital number, since it uses as much as digits as its factorization.

673213201 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 25.

The square root of 673213201 is about 25946.3523640607. The cubic root of 673213201 is about 876.4306179350.

Adding to 673213201 its reverse (102312376), we get a palindrome (775525577).

The spelling of 673213201 in words is "six hundred seventy-three million, two hundred thirteen thousand, two hundred one".