212924723 has 4 divisors (see below), whose sum is σ = 232281528. Its totient is φ = 193567920.

The previous prime is 212924713. The next prime is 212924737. The reversal of 212924723 is 327429212.

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 212924723 - 2⁴ = 212924707 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212924723.

It is not an unprimeable number, because it can be changed into a prime (212924713) 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, 9678386 + ... + 9678407.

It is an arithmetic number, because the mean of its divisors is an integer number (58070382).

Almost surely, 2^212924723 is an apocalyptic number.

212924723 is a deficient number, since it is larger than the sum of its proper divisors (19356805).

212924723 is a wasteful number, since it uses less digits than its factorization.

212924723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19356804.

The product of its digits is 12096, while the sum is 32.

The square root of 212924723 is about 14591.9403439022. The cubic root of 212924723 is about 597.1388998251.

The spelling of 212924723 in words is "two hundred twelve million, nine hundred twenty-four thousand, seven hundred twenty-three".