212343456 has 96 divisors (see below), whose sum is σ = 603711360. Its totient is φ = 64963584.

The previous prime is 212343433. The next prime is 212343457. The reversal of 212343456 is 654343212.

212343456 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a tau number, because it is divible by the number of its divisors (96).

It is an alternating number because its digits alternate between even and odd.

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 15 ways as a sum of consecutive naturals, for example, 285421 + ... + 286163.

It is an arithmetic number, because the mean of its divisors is an integer number (6288660).

Almost surely, 2^212343456 is an apocalyptic number.

212343456 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212343456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301855680).

212343456 is an abundant number, since it is smaller than the sum of its proper divisors (391367904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212343456 is a wasteful number, since it uses less digits than its factorization.

212343456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998 (or 990 counting only the distinct ones).

The product of its digits is 17280, while the sum is 30.

The square root of 212343456 is about 14572.0093329643. The cubic root of 212343456 is about 596.5950245675.

Adding to 212343456 its reverse (654343212), we get a palindrome (866686668).

The spelling of 212343456 in words is "two hundred twelve million, three hundred forty-three thousand, four hundred fifty-six".