331283638 has 16 divisors (see below), whose sum is σ = 573431040. Its totient is φ = 140599656.

The previous prime is 331283633. The next prime is 331283669. The reversal of 331283638 is 836382133.

331283638 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 331283597 and 331283606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331283633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113428 + ... + 116311.

It is an arithmetic number, because the mean of its divisors is an integer number (35839440).

Almost surely, 2^331283638 is an apocalyptic number.

331283638 is a deficient number, since it is larger than the sum of its proper divisors (242147402).

331283638 is a wasteful number, since it uses less digits than its factorization.

331283638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229851.

The product of its digits is 62208, while the sum is 37.

The square root of 331283638 is about 18201.1988066720. The cubic root of 331283638 is about 691.9371720054.

The spelling of 331283638 in words is "three hundred thirty-one million, two hundred eighty-three thousand, six hundred thirty-eight".