331937428 has 12 divisors (see below), whose sum is σ = 581388192. Its totient is φ = 165826520.

The previous prime is 331937423. The next prime is 331937443. The reversal of 331937428 is 824739133.

It is a super-2 number, since 2×331937428² = 220364912214510368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331937423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30208 + ... + 39703.

It is an arithmetic number, because the mean of its divisors is an integer number (48449016).

Almost surely, 2^331937428 is an apocalyptic number.

It is an amenable number.

331937428 is a deficient number, since it is larger than the sum of its proper divisors (249450764).

331937428 is a wasteful number, since it uses less digits than its factorization.

331937428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71102 (or 71100 counting only the distinct ones).

The product of its digits is 108864, while the sum is 40.

The square root of 331937428 is about 18219.1500350593. The cubic root of 331937428 is about 692.3920534475.

The spelling of 331937428 in words is "three hundred thirty-one million, nine hundred thirty-seven thousand, four hundred twenty-eight".