213310061 has 2 divisors, whose sum is σ = 213310062. Its totient is φ = 213310060.

The previous prime is 213310043. The next prime is 213310063. The reversal of 213310061 is 160013312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197262025 + 16048036 = 14045^2 + 4006^2 .

It is a cyclic number.

It is not a de Polignac number, because 213310061 - 2⁶ = 213309997 is a prime.

Together with 213310063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213310063) 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, 106655030 + 106655031.

It is an arithmetic number, because the mean of its divisors is an integer number (106655031).

Almost surely, 2^213310061 is an apocalyptic number.

It is an amenable number.

213310061 is a deficient number, since it is larger than the sum of its proper divisors (1).

213310061 is an equidigital number, since it uses as much as digits as its factorization.

213310061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 213310061 is about 14605.1381712054. The cubic root of 213310061 is about 597.4989044289.

Adding to 213310061 its reverse (160013312), we get a palindrome (373323373).

The spelling of 213310061 in words is "two hundred thirteen million, three hundred ten thousand, sixty-one".