31133220332 has 12 divisors (see below), whose sum is σ = 54992324520. Its totient is φ = 15421127616.

The previous prime is 31133220281. The next prime is 31133220343. The reversal of 31133220332 is 23302233113.

It is a junction number, because it is equal to n+sod(n) for n = 31133220298 and 31133220307.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36370157 + ... + 36371012.

It is an arithmetic number, because the mean of its divisors is an integer number (4582693710).

Almost surely, 2^31133220332 is an apocalyptic number.

It is an amenable number.

31133220332 is a deficient number, since it is larger than the sum of its proper divisors (23859104188).

31133220332 is a wasteful number, since it uses less digits than its factorization.

31133220332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72741280 (or 72741278 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 31133220332 its reverse (23302233113), we get a palindrome (54435453445).

The spelling of 31133220332 in words is "thirty-one billion, one hundred thirty-three million, two hundred twenty thousand, three hundred thirty-two".