212030231 has 4 divisors (see below), whose sum is σ = 242320272. Its totient is φ = 181740192.

The previous prime is 212030201. The next prime is 212030257. The reversal of 212030231 is 132030212.

It is a happy number.

212030231 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.

It is a cyclic number.

It is not a de Polignac number, because 212030231 - 2⁶ = 212030167 is a prime.

It is a super-2 number, since 2×212030231² = 89913637715826722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212030201) 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, 15145010 + ... + 15145023.

It is an arithmetic number, because the mean of its divisors is an integer number (60580068).

Almost surely, 2^212030231 is an apocalyptic number.

212030231 is a deficient number, since it is larger than the sum of its proper divisors (30290041).

212030231 is an equidigital number, since it uses as much as digits as its factorization.

212030231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30290040.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 212030231 is about 14561.2578783565. The cubic root of 212030231 is about 596.3015370923.

Adding to 212030231 its reverse (132030212), we get a palindrome (344060443).

The spelling of 212030231 in words is "two hundred twelve million, thirty thousand, two hundred thirty-one".