212611313 has 2 divisors, whose sum is σ = 212611314. Its totient is φ = 212611312.

The previous prime is 212611303. The next prime is 212611319. The reversal of 212611313 is 313116212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139901584 + 72709729 = 11828^2 + 8527^2 .

It is a cyclic number.

It is not a de Polignac number, because 212611313 - 2¹⁰ = 212610289 is a prime.

It is not a weakly prime, because it can be changed into another prime (212611319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106305656 + 106305657.

It is an arithmetic number, because the mean of its divisors is an integer number (106305657).

Almost surely, 2^212611313 is an apocalyptic number.

It is an amenable number.

212611313 is a deficient number, since it is larger than the sum of its proper divisors (1).

212611313 is an equidigital number, since it uses as much as digits as its factorization.

212611313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 20.

The square root of 212611313 is about 14581.1972416534. The cubic root of 212611313 is about 596.8457740064.

Adding to 212611313 its reverse (313116212), we get a palindrome (525727525).

The spelling of 212611313 in words is "two hundred twelve million, six hundred eleven thousand, three hundred thirteen".