331212025 has 12 divisors (see below), whose sum is σ = 411932092. Its totient is φ = 264176640.

The previous prime is 331211989. The next prime is 331212031. The reversal of 331212025 is 520212133.

It can be written as a sum of positive squares in 6 ways, for example, as 12089529 + 319122496 = 3477^2 + 17864^2 .

It is not a de Polignac number, because 331212025 - 2⁹ = 331211513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331211993 and 331212011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11232 + ... + 28081.

Almost surely, 2^331212025 is an apocalyptic number.

It is an amenable number.

331212025 is a deficient number, since it is larger than the sum of its proper divisors (80720067).

331212025 is a wasteful number, since it uses less digits than its factorization.

331212025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39660 (or 39655 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 331212025 is about 18199.2314398164. The cubic root of 331212025 is about 691.8873101328.

Adding to 331212025 its reverse (520212133), we get a palindrome (851424158).

The spelling of 331212025 in words is "three hundred thirty-one million, two hundred twelve thousand, twenty-five".