31245023352320 has 80 divisors (see below), whose sum is σ = 78857711198640. Its totient is φ = 11840219357184.

The previous prime is 31245023352289. The next prime is 31245023352359. The reversal of 31245023352320 is 2325332054213.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321137867 + ... + 321235146.

It is an arithmetic number, because the mean of its divisors is an integer number (985721389983).

Almost surely, 2^{31245023352320} is an apocalyptic number.

It is an amenable number.

31245023352320 is an abundant number, since it is smaller than the sum of its proper divisors (47612687846320).

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

31245023352320 is an equidigital number, since it uses as much as digits as its factorization.

31245023352320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642373055 (or 642373039 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 35.

The spelling of 31245023352320 in words is "thirty-one trillion, two hundred forty-five billion, twenty-three million, three hundred fifty-two thousand, three hundred twenty".