211568134 has 8 divisors (see below), whose sum is σ = 320494608. Its totient is φ = 104736600.

The previous prime is 211568117. The next prime is 211568167. The reversal of 211568134 is 431865112.

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

It is a super-2 number, since 2×211568134² = 89522150648483912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211568096 and 211568105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523482 + ... + 523885.

It is an arithmetic number, because the mean of its divisors is an integer number (40061826).

Almost surely, 2^211568134 is an apocalyptic number.

211568134 is a deficient number, since it is larger than the sum of its proper divisors (108926474).

211568134 is a wasteful number, since it uses less digits than its factorization.

211568134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047470.

The product of its digits is 5760, while the sum is 31.

The square root of 211568134 is about 14545.3818787958. The cubic root of 211568134 is about 595.8680304027.

The spelling of 211568134 in words is "two hundred eleven million, five hundred sixty-eight thousand, one hundred thirty-four".