213133343 has 2 divisors, whose sum is σ = 213133344. Its totient is φ = 213133342.

The previous prime is 213133337. The next prime is 213133351. The reversal of 213133343 is 343331312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213133343 - 2²⁰ = 212084767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213133313) 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, 106566671 + 106566672.

It is an arithmetic number, because the mean of its divisors is an integer number (106566672).

Almost surely, 2^213133343 is an apocalyptic number.

213133343 is a deficient number, since it is larger than the sum of its proper divisors (1).

213133343 is an equidigital number, since it uses as much as digits as its factorization.

213133343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 23.

The square root of 213133343 is about 14599.0870604980. The cubic root of 213133343 is about 597.3338583252. Note that the first 3 decimals are identical.

Adding to 213133343 its reverse (343331312), we get a palindrome (556464655).

The spelling of 213133343 in words is "two hundred thirteen million, one hundred thirty-three thousand, three hundred forty-three".