212923673 has 4 divisors (see below), whose sum is σ = 222181248. Its totient is φ = 203666100.

The previous prime is 212923609. The next prime is 212923679. The reversal of 212923673 is 376329212.

212923673 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212923673 - 2⁶ = 212923609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212923679) 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, 4628753 + ... + 4628798.

It is an arithmetic number, because the mean of its divisors is an integer number (55545312).

Almost surely, 2^212923673 is an apocalyptic number.

212923673 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

212923673 is a deficient number, since it is larger than the sum of its proper divisors (9257575).

212923673 is an equidigital number, since it uses as much as digits as its factorization.

212923673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9257574.

The product of its digits is 27216, while the sum is 35.

The square root of 212923673 is about 14591.9043650923. The cubic root of 212923673 is about 597.1379182624.

The spelling of 212923673 in words is "two hundred twelve million, nine hundred twenty-three thousand, six hundred seventy-three".