213087803 has 4 divisors (see below), whose sum is σ = 216006888. Its totient is φ = 210168720.

The previous prime is 213087713. The next prime is 213087863. The reversal of 213087803 is 308780312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213087803 - 2⁸ = 213087547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213087803.

It is not an unprimeable number, because it can be changed into a prime (213087863) 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 in 3 ways as a sum of consecutive naturals, for example, 1459433 + ... + 1459578.

It is an arithmetic number, because the mean of its divisors is an integer number (54001722).

Almost surely, 2^213087803 is an apocalyptic number.

213087803 is a deficient number, since it is larger than the sum of its proper divisors (2919085).

213087803 is an equidigital number, since it uses as much as digits as its factorization.

213087803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2919084.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 213087803 is about 14597.5272906064. The cubic root of 213087803 is about 597.2913113744.

The spelling of 213087803 in words is "two hundred thirteen million, eighty-seven thousand, eight hundred three".