212383093 has 4 divisors (see below), whose sum is σ = 228720268. Its totient is φ = 196045920.

The previous prime is 212383079. The next prime is 212383097. The reversal of 212383093 is 390383212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 52664049 + 159719044 = 7257^2 + 12638^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212383093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212383097) 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, 8168568 + ... + 8168593.

It is an arithmetic number, because the mean of its divisors is an integer number (57180067).

Almost surely, 2^212383093 is an apocalyptic number.

It is an amenable number.

212383093 is a deficient number, since it is larger than the sum of its proper divisors (16337175).

212383093 is a wasteful number, since it uses less digits than its factorization.

212383093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16337174.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 212383093 is about 14573.3693084338. The cubic root of 212383093 is about 596.6321433094.

The spelling of 212383093 in words is "two hundred twelve million, three hundred eighty-three thousand, ninety-three".