213313049 has 2 divisors, whose sum is σ = 213313050. Its totient is φ = 213313048.

The previous prime is 213313031. The next prime is 213313073. The reversal of 213313049 is 940313312.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196560400 + 16752649 = 14020^2 + 4093^2 .

It is a cyclic number.

It is not a de Polignac number, because 213313049 - 2²⁰ = 212264473 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (213313099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106656524 + 106656525.

It is an arithmetic number, because the mean of its divisors is an integer number (106656525).

Almost surely, 2^213313049 is an apocalyptic number.

It is an amenable number.

213313049 is a deficient number, since it is larger than the sum of its proper divisors (1).

213313049 is an equidigital number, since it uses as much as digits as its factorization.

213313049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 213313049 is about 14605.2404636144. The cubic root of 213313049 is about 597.5016942933.

The spelling of 213313049 in words is "two hundred thirteen million, three hundred thirteen thousand, forty-nine".