331331444 has 6 divisors (see below), whose sum is σ = 579830034. Its totient is φ = 165665720.

The previous prime is 331331431. The next prime is 331331447. The reversal of 331331444 is 444133133.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 260435044 + 70896400 = 16138^2 + 8420^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331331447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41416427 + ... + 41416434.

It is an arithmetic number, because the mean of its divisors is an integer number (96638339).

Almost surely, 2^331331444 is an apocalyptic number.

It is an amenable number.

331331444 is a deficient number, since it is larger than the sum of its proper divisors (248498590).

331331444 is a wasteful number, since it uses less digits than its factorization.

331331444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82832865 (or 82832863 counting only the distinct ones).

The product of its digits is 5184, while the sum is 26.

The square root of 331331444 is about 18202.5120244432. The cubic root of 331331444 is about 691.9704538155.

Adding to 331331444 its reverse (444133133), we get a palindrome (775464577).

The spelling of 331331444 in words is "three hundred thirty-one million, three hundred thirty-one thousand, four hundred forty-four".