31332421653500 has 144 divisors (see below), whose sum is σ = 76061597844960. Its totient is φ = 11265587872000.

The previous prime is 31332421653479. The next prime is 31332421653553. The reversal of 31332421653500 is 535612423313.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2474999 + ... + 8294001.

It is an arithmetic number, because the mean of its divisors is an integer number (528205540590).

Almost surely, 2^{31332421653500} 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 31332421653500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38030798922480).

31332421653500 is an abundant number, since it is smaller than the sum of its proper divisors (44729176191460).

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

31332421653500 is a wasteful number, since it uses less digits than its factorization.

31332421653500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5819133 (or 5819110 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 38.

The spelling of 31332421653500 in words is "thirty-one trillion, three hundred thirty-two billion, four hundred twenty-one million, six hundred fifty-three thousand, five hundred".