349868213 has 2 divisors, whose sum is σ = 349868214. Its totient is φ = 349868212.

The previous prime is 349868159. The next prime is 349868231. The reversal of 349868213 is 312868943.

Together with next prime (349868231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 349615204 + 253009 = 18698^2 + 503^2 .

It is a cyclic number.

It is not a de Polignac number, because 349868213 - 2⁶ = 349868149 is a prime.

It is a Chen prime.

It is equal to p_18796742 and since 349868213 and 18796742 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349868243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174934106 + 174934107.

It is an arithmetic number, because the mean of its divisors is an integer number (174934107).

Almost surely, 2^349868213 is an apocalyptic number.

It is an amenable number.

349868213 is a deficient number, since it is larger than the sum of its proper divisors (1).

349868213 is an equidigital number, since it uses as much as digits as its factorization.

349868213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 44.

The square root of 349868213 is about 18704.7644465254. The cubic root of 349868213 is about 704.6414104493.

The spelling of 349868213 in words is "three hundred forty-nine million, eight hundred sixty-eight thousand, two hundred thirteen".