31330232000 has 224 divisors, whose sum is σ = 82957440384. Its totient is φ = 11692032000.

The previous prime is 31330231987. The next prime is 31330232033. The reversal of 31330232000 is 23203313.

It is a self number, because there is not a number n which added to its sum of digits gives 31330232000.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7541924 + ... + 7546076.

It is an arithmetic number, because the mean of its divisors is an integer number (370345716).

Almost surely, 2^31330232000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31330232000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41478720192).

31330232000 is an abundant number, since it is smaller than the sum of its proper divisors (51627208384).

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

31330232000 is a wasteful number, since it uses less digits than its factorization.

31330232000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4244 (or 4224 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 17.

Adding to 31330232000 its reverse (23203313), we get a palindrome (31353435313).

The spelling of 31330232000 in words is "thirty-one billion, three hundred thirty million, two hundred thirty-two thousand".