211434797 has 16 divisors (see below), whose sum is σ = 256804992. Its totient is φ = 169935360.

The previous prime is 211434757. The next prime is 211434799. The reversal of 211434797 is 797434112.

It is a happy number.

It is not a de Polignac number, because 211434797 - 2¹⁰ = 211433773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211434797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211434799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30278 + ... + 36600.

It is an arithmetic number, because the mean of its divisors is an integer number (16050312).

Almost surely, 2^211434797 is an apocalyptic number.

It is an amenable number.

211434797 is a deficient number, since it is larger than the sum of its proper divisors (45370195).

211434797 is a wasteful number, since it uses less digits than its factorization.

211434797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6628.

The product of its digits is 42336, while the sum is 38.

The square root of 211434797 is about 14540.7976741305. The cubic root of 211434797 is about 595.7428257372.

The spelling of 211434797 in words is "two hundred eleven million, four hundred thirty-four thousand, seven hundred ninety-seven".