217122934 has 8 divisors (see below), whose sum is σ = 372210768. Its totient is φ = 93052680.

The previous prime is 217122923. The next prime is 217122989. The reversal of 217122934 is 439221712.

217122934 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 junction number, because it is equal to n+sod(n) for n = 217122896 and 217122905.

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, 7754377 + ... + 7754404.

It is an arithmetic number, because the mean of its divisors is an integer number (46526346).

Almost surely, 2^217122934 is an apocalyptic number.

217122934 is a deficient number, since it is larger than the sum of its proper divisors (155087834).

217122934 is a wasteful number, since it uses less digits than its factorization.

217122934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15508790.

The product of its digits is 6048, while the sum is 31.

The square root of 217122934 is about 14735.0919237038. The cubic root of 217122934 is about 601.0379570768.

The spelling of 217122934 in words is "two hundred seventeen million, one hundred twenty-two thousand, nine hundred thirty-four".