213004243 has 2 divisors, whose sum is σ = 213004244. Its totient is φ = 213004242.

The previous prime is 213004201. The next prime is 213004277. The reversal of 213004243 is 342400312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213004243 - 2¹³ = 212996051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213004243.

It is not a weakly prime, because it can be changed into another prime (213004343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106502121 + 106502122.

It is an arithmetic number, because the mean of its divisors is an integer number (106502122).

Almost surely, 2^213004243 is an apocalyptic number.

213004243 is a deficient number, since it is larger than the sum of its proper divisors (1).

213004243 is an equidigital number, since it uses as much as digits as its factorization.

213004243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 213004243 is about 14594.6648813873. The cubic root of 213004243 is about 597.2132274632.

Adding to 213004243 its reverse (342400312), we get a palindrome (555404555).

The spelling of 213004243 in words is "two hundred thirteen million, four thousand, two hundred forty-three".