331243012 has 6 divisors (see below), whose sum is σ = 579675278. Its totient is φ = 165621504.

The previous prime is 331243009. The next prime is 331243013. The reversal of 331243012 is 210342133.

It can be written as a sum of positive squares in only one way, i.e., 315986176 + 15256836 = 17776^2 + 3906^2 .

It is not an unprimeable number, because it can be changed into a prime (331243013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41405373 + ... + 41405380.

Almost surely, 2^331243012 is an apocalyptic number.

It is an amenable number.

331243012 is a deficient number, since it is larger than the sum of its proper divisors (248432266).

331243012 is a wasteful number, since it uses less digits than its factorization.

331243012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82810757 (or 82810755 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 331243012 is about 18200.0827470646. The cubic root of 331243012 is about 691.9088862853.

Adding to 331243012 its reverse (210342133), we get a palindrome (541585145).

The spelling of 331243012 in words is "three hundred thirty-one million, two hundred forty-three thousand, twelve".