331020212 has 12 divisors (see below), whose sum is σ = 579607140. Its totient is φ = 165418176.

The previous prime is 331020169. The next prime is 331020233. The reversal of 331020212 is 212020133.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 178596496 + 152423716 = 13364^2 + 12346^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 14537 + ... + 29552.

It is an arithmetic number, because the mean of its divisors is an integer number (48300595).

Almost surely, 2^331020212 is an apocalyptic number.

It is an amenable number.

331020212 is a deficient number, since it is larger than the sum of its proper divisors (248586928).

331020212 is a wasteful number, since it uses less digits than its factorization.

331020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45970 (or 45968 counting only the distinct ones).

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

The square root of 331020212 is about 18193.9608661775. The cubic root of 331020212 is about 691.7537213760.

Adding to 331020212 its reverse (212020133), we get a palindrome (543040345).

The spelling of 331020212 in words is "three hundred thirty-one million, twenty thousand, two hundred twelve".