212434347 has 8 divisors (see below), whose sum is σ = 284269456. Its totient is φ = 141111072.

The previous prime is 212434331. The next prime is 212434349. The reversal of 212434347 is 743434212.

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

It is not a de Polignac number, because 212434347 - 2⁴ = 212434331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212434349) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 126988 + ... + 128649.

It is an arithmetic number, because the mean of its divisors is an integer number (35533682).

Almost surely, 2^212434347 is an apocalyptic number.

212434347 is a deficient number, since it is larger than the sum of its proper divisors (71835109).

212434347 is a wasteful number, since it uses less digits than its factorization.

212434347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255917.

The product of its digits is 16128, while the sum is 30.

The square root of 212434347 is about 14575.1276838318. The cubic root of 212434347 is about 596.6801341418.

Adding to 212434347 its reverse (743434212), we get a palindrome (955868559).

The spelling of 212434347 in words is "two hundred twelve million, four hundred thirty-four thousand, three hundred forty-seven".