212312723 has 4 divisors (see below), whose sum is σ = 242643120. Its totient is φ = 181982328.

The previous prime is 212312687. The next prime is 212312729. The reversal of 212312723 is 327213212.

212312723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212312723 - 2¹⁰ = 212311699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212312729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15165188 + ... + 15165201.

It is an arithmetic number, because the mean of its divisors is an integer number (60660780).

Almost surely, 2^212312723 is an apocalyptic number.

212312723 is a deficient number, since it is larger than the sum of its proper divisors (30330397).

212312723 is an equidigital number, since it uses as much as digits as its factorization.

212312723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30330396.

The product of its digits is 1008, while the sum is 23.

The square root of 212312723 is about 14570.9547731094. The cubic root of 212312723 is about 596.5662409484.

Adding to 212312723 its reverse (327213212), we get a palindrome (539525935).

The spelling of 212312723 in words is "two hundred twelve million, three hundred twelve thousand, seven hundred twenty-three".