31328243500 has 96 divisors (see below), whose sum is σ = 72352111104. Its totient is φ = 11831040000.

The previous prime is 31328243497. The next prime is 31328243567. The reversal of 31328243500 is 534282313.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 610852 + ... + 660148.

It is an arithmetic number, because the mean of its divisors is an integer number (753667824).

Almost surely, 2^31328243500 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 31328243500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36176055552).

31328243500 is an abundant number, since it is smaller than the sum of its proper divisors (41023867604).

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

31328243500 is a wasteful number, since it uses less digits than its factorization.

31328243500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49388 (or 49376 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 31328243500 in words is "thirty-one billion, three hundred twenty-eight million, two hundred forty-three thousand, five hundred".