212712723 has 28 divisors (see below), whose sum is σ = 320135328. Its totient is φ = 141270480.

The previous prime is 212712719. The next prime is 212712749. The reversal of 212712723 is 327217212.

It is not a de Polignac number, because 212712723 - 2² = 212712719 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (212712623) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 313861 + ... + 314537.

Almost surely, 2^212712723 is an apocalyptic number.

212712723 is a deficient number, since it is larger than the sum of its proper divisors (107422605).

212712723 is an frugal number, since it uses more digits than its factorization.

212712723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126 (or 1111 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 212712723 is about 14584.6742507332. The cubic root of 212712723 is about 596.9406521646.

Adding to 212712723 its reverse (327217212), we get a palindrome (539929935).

The spelling of 212712723 in words is "two hundred twelve million, seven hundred twelve thousand, seven hundred twenty-three".