213335461 has 2 divisors, whose sum is σ = 213335462. Its totient is φ = 213335460.

The previous prime is 213335453. The next prime is 213335501. The reversal of 213335461 is 164533312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213335236 + 225 = 14606^2 + 15^2 .

It is a cyclic number.

It is not a de Polignac number, because 213335461 - 2³ = 213335453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213335411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106667730 + 106667731.

It is an arithmetic number, because the mean of its divisors is an integer number (106667731).

Almost surely, 2^213335461 is an apocalyptic number.

It is an amenable number.

213335461 is a deficient number, since it is larger than the sum of its proper divisors (1).

213335461 is an equidigital number, since it uses as much as digits as its factorization.

213335461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 28.

The square root of 213335461 is about 14606.0077023121. The cubic root of 213335461 is about 597.5226193126.

Adding to 213335461 its reverse (164533312), we get a palindrome (377868773).

The spelling of 213335461 in words is "two hundred thirteen million, three hundred thirty-five thousand, four hundred sixty-one".