213893803 has 2 divisors, whose sum is σ = 213893804. Its totient is φ = 213893802.

The previous prime is 213893759. The next prime is 213893807. The reversal of 213893803 is 308398312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213893803 is a prime.

It is not a weakly prime, because it can be changed into another prime (213893807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106946901 + 106946902.

It is an arithmetic number, because the mean of its divisors is an integer number (106946902).

Almost surely, 2^213893803 is an apocalyptic number.

213893803 is a deficient number, since it is larger than the sum of its proper divisors (1).

213893803 is an equidigital number, since it uses as much as digits as its factorization.

213893803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 213893803 is about 14625.1086491691. The cubic root of 213893803 is about 598.0434443443.

The spelling of 213893803 in words is "two hundred thirteen million, eight hundred ninety-three thousand, eight hundred three".