331012212 has 48 divisors (see below), whose sum is σ = 803362560. Its totient is φ = 105985152.

The previous prime is 331012193. The next prime is 331012223. The reversal of 331012212 is 212210133.

It is a junction number, because it is equal to n+sod(n) for n = 331012191 and 331012200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30358 + ... + 39794.

It is an arithmetic number, because the mean of its divisors is an integer number (16736720).

Almost surely, 2^331012212 is an apocalyptic number.

It is an amenable number.

331012212 is an abundant number, since it is smaller than the sum of its proper divisors (472350348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331012212 is a wasteful number, since it uses less digits than its factorization.

331012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9560 (or 9558 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 331012212 is about 18193.7410116776. The cubic root of 331012212 is about 691.7481486303.

Adding to 331012212 its reverse (212210133), we get a palindrome (543222345).

The spelling of 331012212 in words is "three hundred thirty-one million, twelve thousand, two hundred twelve".