331123320 has 96 divisors (see below), whose sum is σ = 1173996720. Its totient is φ = 80271360.

The previous prime is 331123283. The next prime is 331123367. The reversal of 331123320 is 23321133.

331123320 is a `hidden beast` number, since 331 + 1 + 2 + 332 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 331123293 and 331123302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37849 + ... + 45768.

Almost surely, 2^331123320 is an apocalyptic number.

331123320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

331123320 is an abundant number, since it is smaller than the sum of its proper divisors (842873400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331123320 is a wasteful number, since it uses less digits than its factorization.

331123320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83645 (or 83638 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 331123320 is about 18196.7942231592. The cubic root of 331123320 is about 691.8255376738.

Adding to 331123320 its reverse (23321133), we get a palindrome (354444453).

The spelling of 331123320 in words is "three hundred thirty-one million, one hundred twenty-three thousand, three hundred twenty".