212343455 has 8 divisors (see below), whose sum is σ = 254977632. Its totient is φ = 169764448.

The previous prime is 212343433. The next prime is 212343457. The reversal of 212343455 is 554343212.

It is a happy number.

212343455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212343455 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 (212343457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4787 + ... + 21156.

It is an arithmetic number, because the mean of its divisors is an integer number (31872204).

Almost surely, 2^212343455 is an apocalyptic number.

212343455 is a deficient number, since it is larger than the sum of its proper divisors (42634177).

212343455 is a wasteful number, since it uses less digits than its factorization.

212343455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27585.

The product of its digits is 14400, while the sum is 29.

The square root of 212343455 is about 14572.0092986520. The cubic root of 212343455 is about 596.5950236310.

Adding to 212343455 its reverse (554343212), we get a palindrome (766686667).

The spelling of 212343455 in words is "two hundred twelve million, three hundred forty-three thousand, four hundred fifty-five".