213683878 has 4 divisors (see below), whose sum is σ = 320525820. Its totient is φ = 106841938.

The previous prime is 213683851. The next prime is 213683893. The reversal of 213683878 is 878386312.

213683878 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

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, 53420968 + ... + 53420971.

It is an arithmetic number, because the mean of its divisors is an integer number (80131455).

Almost surely, 2^213683878 is an apocalyptic number.

213683878 is a deficient number, since it is larger than the sum of its proper divisors (106841942).

213683878 is a wasteful number, since it uses less digits than its factorization.

213683878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106841941.

The product of its digits is 387072, while the sum is 46.

The square root of 213683878 is about 14617.9300176188. The cubic root of 213683878 is about 597.8477313903.

The spelling of 213683878 in words is "two hundred thirteen million, six hundred eighty-three thousand, eight hundred seventy-eight".