31321030332 has 24 divisors (see below), whose sum is σ = 73465039872. Its totient is φ = 10385681200.

The previous prime is 31321030309. The next prime is 31321030343. The reversal of 31321030332 is 23303012313.

It is a junction number, because it is equal to n+sod(n) for n = 31321030299 and 31321030308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6830394 + ... + 6834977.

It is an arithmetic number, because the mean of its divisors is an integer number (3061043328).

Almost surely, 2^31321030332 is an apocalyptic number.

It is an amenable number.

31321030332 is an abundant number, since it is smaller than the sum of its proper divisors (42144009540).

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

31321030332 is a wasteful number, since it uses less digits than its factorization.

31321030332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13665569 (or 13665567 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 31321030332 its reverse (23303012313), we get a palindrome (54624042645).

The spelling of 31321030332 in words is "thirty-one billion, three hundred twenty-one million, thirty thousand, three hundred thirty-two".