349724213 has 2 divisors, whose sum is σ = 349724214. Its totient is φ = 349724212.

The previous prime is 349724201. The next prime is 349724261. The reversal of 349724213 is 312427943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 321771844 + 27952369 = 17938^2 + 5287^2 .

It is a cyclic number.

It is not a de Polignac number, because 349724213 - 2⁴ = 349724197 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349724273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174862106 + 174862107.

It is an arithmetic number, because the mean of its divisors is an integer number (174862107).

Almost surely, 2^349724213 is an apocalyptic number.

It is an amenable number.

349724213 is a deficient number, since it is larger than the sum of its proper divisors (1).

349724213 is an equidigital number, since it uses as much as digits as its factorization.

349724213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 35.

The square root of 349724213 is about 18700.9147637221. The cubic root of 349724213 is about 704.5447242463.

The spelling of 349724213 in words is "three hundred forty-nine million, seven hundred twenty-four thousand, two hundred thirteen".