212130331 has 16 divisors (see below), whose sum is σ = 251409600. Its totient is φ = 175125888.

The previous prime is 212130313. The next prime is 212130337. The reversal of 212130331 is 133031212.

212130331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212130331 - 2⁵ = 212130299 is a prime.

It is a super-2 number, since 2×212130331² = 89998554660339122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212130337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102301 + ... + 104353.

It is an arithmetic number, because the mean of its divisors is an integer number (15713100).

Almost surely, 2^212130331 is an apocalyptic number.

212130331 is a deficient number, since it is larger than the sum of its proper divisors (39279269).

212130331 is a wasteful number, since it uses less digits than its factorization.

212130331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2598.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 212130331 is about 14564.6946758248. The cubic root of 212130331 is about 596.3953608092.

Adding to 212130331 its reverse (133031212), we get a palindrome (345161543).

The spelling of 212130331 in words is "two hundred twelve million, one hundred thirty thousand, three hundred thirty-one".