212243453 has 8 divisors (see below), whose sum is σ = 231978240. Its totient is φ = 193314240.

The previous prime is 212243413. The next prime is 212243459. The reversal of 212243453 is 354342212.

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 212243453 - 2⁶ = 212243389 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 (212243459) 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, 200843 + ... + 201896.

It is an arithmetic number, because the mean of its divisors is an integer number (28997280).

Almost surely, 2^212243453 is an apocalyptic number.

It is an amenable number.

212243453 is a deficient number, since it is larger than the sum of its proper divisors (19734787).

212243453 is a wasteful number, since it uses less digits than its factorization.

212243453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402787.

The product of its digits is 5760, while the sum is 26.

The square root of 212243453 is about 14568.5775901424. The cubic root of 212243453 is about 596.5013545268.

Adding to 212243453 its reverse (354342212), we get a palindrome (566585665).

The spelling of 212243453 in words is "two hundred twelve million, two hundred forty-three thousand, four hundred fifty-three".