213422816 has 12 divisors (see below), whose sum is σ = 420176232. Its totient is φ = 106711392.

The previous prime is 213422809. The next prime is 213422821. The reversal of 213422816 is 618224312.

It is a happy number.

213422816 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3334700 + ... + 3334763.

It is an arithmetic number, because the mean of its divisors is an integer number (35014686).

Almost surely, 2^213422816 is an apocalyptic number.

It is an amenable number.

213422816 is a deficient number, since it is larger than the sum of its proper divisors (206753416).

213422816 is an equidigital number, since it uses as much as digits as its factorization.

213422816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6669473 (or 6669465 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 213422816 is about 14608.9977753438. The cubic root of 213422816 is about 597.6041645394.

The spelling of 213422816 in words is "two hundred thirteen million, four hundred twenty-two thousand, eight hundred sixteen".