213405814 has 8 divisors (see below), whose sum is σ = 320501088. Its totient is φ = 106572120.

The previous prime is 213405763. The next prime is 213405839. The reversal of 213405814 is 418504312.

213405814 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63342 + ... + 66625.

It is an arithmetic number, because the mean of its divisors is an integer number (40062636).

Almost surely, 2^213405814 is an apocalyptic number.

213405814 is a deficient number, since it is larger than the sum of its proper divisors (107095274).

213405814 is a wasteful number, since it uses less digits than its factorization.

213405814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130790.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 213405814 is about 14608.4158620981. The cubic root of 213405814 is about 597.5882950461.

The spelling of 213405814 in words is "two hundred thirteen million, four hundred five thousand, eight hundred fourteen".