212312123 has 8 divisors (see below), whose sum is σ = 214315008. Its totient is φ = 210314664.

The previous prime is 212312119. The next prime is 212312129. The reversal of 212312123 is 321213212.

212312123 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 not a de Polignac number, because 212312123 - 2² = 212312119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212312129) 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, 162290 + ... + 163592.

It is an arithmetic number, because the mean of its divisors is an integer number (26789376).

Almost surely, 2^212312123 is an apocalyptic number.

212312123 is a deficient number, since it is larger than the sum of its proper divisors (2002885).

212312123 is a wasteful number, since it uses less digits than its factorization.

212312123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2713.

The product of its digits is 144, while the sum is 17.

The square root of 212312123 is about 14570.9341841901. The cubic root of 212312123 is about 596.5656789785.

Adding to 212312123 its reverse (321213212), we get a palindrome (533525335).

The spelling of 212312123 in words is "two hundred twelve million, three hundred twelve thousand, one hundred twenty-three".