212434783 has 8 divisors (see below), whose sum is σ = 236678400. Its totient is φ = 189013080.

The previous prime is 212434741. The next prime is 212434811. The reversal of 212434783 is 387434212.

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

It is a cyclic number.

It is not a de Polignac number, because 212434783 - 2¹⁷ = 212303711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212434283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204933 + ... + 205966.

It is an arithmetic number, because the mean of its divisors is an integer number (29584800).

Almost surely, 2^212434783 is an apocalyptic number.

212434783 is a deficient number, since it is larger than the sum of its proper divisors (24243617).

212434783 is a wasteful number, since it uses less digits than its factorization.

212434783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410957.

The product of its digits is 32256, while the sum is 34.

The square root of 212434783 is about 14575.1426408114. The cubic root of 212434783 is about 596.6805423501.

Adding to 212434783 its reverse (387434212), we get a palindrome (599868995).

The spelling of 212434783 in words is "two hundred twelve million, four hundred thirty-four thousand, seven hundred eighty-three".