211912353 has 12 divisors (see below), whose sum is σ = 311114388. Its totient is φ = 138958560.

The previous prime is 211912291. The next prime is 211912369. The reversal of 211912353 is 353219112.

It can be written as a sum of positive squares in 2 ways, for example, as 16136289 + 195776064 = 4017^2 + 13992^2 .

It is not a de Polignac number, because 211912353 - 2⁶ = 211912289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211922353) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 192450 + ... + 193547.

It is an arithmetic number, because the mean of its divisors is an integer number (25926199).

Almost surely, 2^211912353 is an apocalyptic number.

It is an amenable number.

211912353 is a deficient number, since it is larger than the sum of its proper divisors (99202035).

211912353 is a wasteful number, since it uses less digits than its factorization.

211912353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386064 (or 386061 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 211912353 is about 14557.2096570737. The cubic root of 211912353 is about 596.1910121885.

The spelling of 211912353 in words is "two hundred eleven million, nine hundred twelve thousand, three hundred fifty-three".