212328073 has 4 divisors (see below), whose sum is σ = 212357700. Its totient is φ = 212298448.

The previous prime is 212328071. The next prime is 212328091. The reversal of 212328073 is 370823212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 123365449 + 88962624 = 11107^2 + 9432^2 .

It is a cyclic number.

It is not a de Polignac number, because 212328073 - 2¹ = 212328071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212328071) 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, 3411 + ... + 20887.

It is an arithmetic number, because the mean of its divisors is an integer number (53089425).

Almost surely, 2^212328073 is an apocalyptic number.

It is an amenable number.

212328073 is a deficient number, since it is larger than the sum of its proper divisors (29627).

212328073 is a wasteful number, since it uses less digits than its factorization.

212328073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29626.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 212328073 is about 14571.4814964025. The cubic root of 212328073 is about 596.5806176517.

The spelling of 212328073 in words is "two hundred twelve million, three hundred twenty-eight thousand, seventy-three".