31133330328 has 32 divisors (see below), whose sum is σ = 78560746560. Its totient is φ = 10280787360.

The previous prime is 31133330323. The next prime is 31133330363. The reversal of 31133330328 is 82303333113.

It is a junction number, because it is equal to n+sod(n) for n = 31133330295 and 31133330304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31133330323) 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, 6059218 + ... + 6064353.

It is an arithmetic number, because the mean of its divisors is an integer number (2455023330).

Almost surely, 2^31133330328 is an apocalyptic number.

It is an amenable number.

31133330328 is an abundant number, since it is smaller than the sum of its proper divisors (47427416232).

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

31133330328 is a wasteful number, since it uses less digits than its factorization.

31133330328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12123687 (or 12123683 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 30.

The spelling of 31133330328 in words is "thirty-one billion, one hundred thirty-three million, three hundred thirty thousand, three hundred twenty-eight".