213122634 has 8 divisors (see below), whose sum is σ = 426245280. Its totient is φ = 71040876.

The previous prime is 213122629. The next prime is 213122671. The reversal of 213122634 is 436221312.

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

213122634 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17760214 + ... + 17760225.

It is an arithmetic number, because the mean of its divisors is an integer number (53280660).

Almost surely, 2^213122634 is an apocalyptic number.

213122634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

213122634 is a wasteful number, since it uses less digits than its factorization.

213122634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35520444.

The product of its digits is 1728, while the sum is 24.

The square root of 213122634 is about 14598.7202863813. The cubic root of 213122634 is about 597.3238537034.

Adding to 213122634 its reverse (436221312), we get a palindrome (649343946).

The spelling of 213122634 in words is "two hundred thirteen million, one hundred twenty-two thousand, six hundred thirty-four".