213384403 has 2 divisors, whose sum is σ = 213384404. Its totient is φ = 213384402.

The previous prime is 213384359. The next prime is 213384419. The reversal of 213384403 is 304483312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213384403 - 2¹⁷ = 213253331 is a prime.

It is not a weakly prime, because it can be changed into another prime (213384473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106692201 + 106692202.

It is an arithmetic number, because the mean of its divisors is an integer number (106692202).

Almost surely, 2^213384403 is an apocalyptic number.

213384403 is a deficient number, since it is larger than the sum of its proper divisors (1).

213384403 is an equidigital number, since it uses as much as digits as its factorization.

213384403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 213384403 is about 14607.6830127163. The cubic root of 213384403 is about 597.5683090381.

The spelling of 213384403 in words is "two hundred thirteen million, three hundred eighty-four thousand, four hundred three".