212030311 has 8 divisors (see below), whose sum is σ = 217564704. Its totient is φ = 206513280.

The previous prime is 212030309. The next prime is 212030317. The reversal of 212030311 is 113030212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212030311 - 2¹ = 212030309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212030291 and 212030300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212030317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22531 + ... + 30523.

It is an arithmetic number, because the mean of its divisors is an integer number (27195588).

Almost surely, 2^212030311 is an apocalyptic number.

212030311 is a deficient number, since it is larger than the sum of its proper divisors (5534393).

212030311 is an equidigital number, since it uses as much as digits as its factorization.

212030311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8681.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 212030311 is about 14561.2606253717. The cubic root of 212030311 is about 596.3016120881.

Adding to 212030311 its reverse (113030212), we get a palindrome (325060523).

Subtracting from 212030311 its reverse (113030212), we obtain a palindrome (99000099).

The spelling of 212030311 in words is "two hundred twelve million, thirty thousand, three hundred eleven".