213646234 has 8 divisors (see below), whose sum is σ = 330807168. Its totient is φ = 103377180.

The previous prime is 213646193. The next prime is 213646243. The reversal of 213646234 is 432646312.

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

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 213646196 and 213646205.

It is an unprimeable number.

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, 1722892 + ... + 1723015.

It is an arithmetic number, because the mean of its divisors is an integer number (41350896).

Almost surely, 2^213646234 is an apocalyptic number.

213646234 is a deficient number, since it is larger than the sum of its proper divisors (117160934).

213646234 is a wasteful number, since it uses less digits than its factorization.

213646234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3445940.

The product of its digits is 20736, while the sum is 31.

The square root of 213646234 is about 14616.6423640999. The cubic root of 213646234 is about 597.8126223593.

The spelling of 213646234 in words is "two hundred thirteen million, six hundred forty-six thousand, two hundred thirty-four".