213803814 has 48 divisors (see below), whose sum is σ = 510918912. Its totient is φ = 58424784.

The previous prime is 213803803. The next prime is 213803819. The reversal of 213803814 is 418308312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213803819) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17407 + ... + 27029.

It is an arithmetic number, because the mean of its divisors is an integer number (10644144).

Almost surely, 2^213803814 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213803814, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255459456).

213803814 is an abundant number, since it is smaller than the sum of its proper divisors (297115098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213803814 is a wasteful number, since it uses less digits than its factorization.

213803814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9681 (or 9658 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 213803814 is about 14622.0318013606. The cubic root of 213803814 is about 597.9595633407.

The spelling of 213803814 in words is "two hundred thirteen million, eight hundred three thousand, eight hundred fourteen".