331212033 has 6 divisors (see below), whose sum is σ = 478417394. Its totient is φ = 220808016.

The previous prime is 331212031. The next prime is 331212043. The reversal of 331212033 is 330212133.

It can be written as a sum of positive squares in only one way, i.e., 330948864 + 263169 = 18192^2 + 513^2 .

It is not a de Polignac number, because 331212033 - 2¹ = 331212031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331211997 and 331212015.

It is not an unprimeable number, because it can be changed into a prime (331212031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18400660 + ... + 18400677.

Almost surely, 2^331212033 is an apocalyptic number.

It is an amenable number.

331212033 is a deficient number, since it is larger than the sum of its proper divisors (147205361).

331212033 is a wasteful number, since it uses less digits than its factorization.

331212033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36801343 (or 36801340 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 331212033 is about 18199.2316596059. The cubic root of 331212033 is about 691.8873157033.

Adding to 331212033 its reverse (330212133), we get a palindrome (661424166).

The spelling of 331212033 in words is "three hundred thirty-one million, two hundred twelve thousand, thirty-three".