213556703 has 4 divisors (see below), whose sum is σ = 226118880. Its totient is φ = 200994528.

The previous prime is 213556697. The next prime is 213556709. The reversal of 213556703 is 307655312.

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

It is an interprime number because it is at equal distance from previous prime (213556697) and next prime (213556709).

It is a cyclic number.

It is not a de Polignac number, because 213556703 - 2¹⁰ = 213555679 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 213556703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213556709) 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 in 3 ways as a sum of consecutive naturals, for example, 6281063 + ... + 6281096.

It is an arithmetic number, because the mean of its divisors is an integer number (56529720).

Almost surely, 2^213556703 is an apocalyptic number.

213556703 is a deficient number, since it is larger than the sum of its proper divisors (12562177).

213556703 is a wasteful number, since it uses less digits than its factorization.

213556703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12562176.

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 213556703 is about 14613.5794041022. The cubic root of 213556703 is about 597.7291038576.

The spelling of 213556703 in words is "two hundred thirteen million, five hundred fifty-six thousand, seven hundred three".