213043 has 2 divisors, whose sum is σ = 213044. Its totient is φ = 213042.

The previous prime is 213029. The next prime is 213067. The reversal of 213043 is 340312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213043 - 2¹⁷ = 81971 is a prime.

It is not a weakly prime, because it can be changed into another prime (213023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106521 + 106522.

It is an arithmetic number, because the mean of its divisors is an integer number (106522).

2²¹³⁰⁴³ is an apocalyptic number.

213043 is a deficient number, since it is larger than the sum of its proper divisors (1).

213043 is an equidigital number, since it uses as much as digits as its factorization.

213043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 213043 is about 461.5658132921. The cubic root of 213043 is about 59.7249447069.

Adding to 213043 its reverse (340312), we get a palindrome (553355).

It can be divided in two parts, 21 and 3043, that multiplied together give a triangular number (63903 = T₃₅₇).

The spelling of 213043 in words is "two hundred thirteen thousand, forty-three".