213185803 has 2 divisors, whose sum is σ = 213185804. Its totient is φ = 213185802.

The previous prime is 213185801. The next prime is 213185809. The reversal of 213185803 is 308581312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213185803 - 2¹ = 213185801 is a prime.

Together with 213185801, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (213185801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106592901 + 106592902.

It is an arithmetic number, because the mean of its divisors is an integer number (106592902).

Almost surely, 2^213185803 is an apocalyptic number.

213185803 is a deficient number, since it is larger than the sum of its proper divisors (1).

213185803 is an equidigital number, since it uses as much as digits as its factorization.

213185803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 213185803 is about 14600.8836376433. The cubic root of 213185803 is about 597.3828629579.

The spelling of 213185803 in words is "two hundred thirteen million, one hundred eighty-five thousand, eight hundred three".