31332231220000 has 480 divisors, whose sum is σ = 81555309247104. Its totient is φ = 11829888000000.

The previous prime is 31332231219929. The next prime is 31332231220027. The reversal of 31332231220000 is 2213223313.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4804816740 + ... + 4804823260.

Almost surely, 2^{31332231220000} 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 31332231220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40777654623552).

31332231220000 is an abundant number, since it is smaller than the sum of its proper divisors (50223078027104).

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

31332231220000 is a wasteful number, since it uses less digits than its factorization.

31332231220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6782 (or 6759 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31332231220000 its reverse (2213223313), we get a palindrome (31334444443313).

The spelling of 31332231220000 in words is "thirty-one trillion, three hundred thirty-two billion, two hundred thirty-one million, two hundred twenty thousand".