31249375000 has 64 divisors (see below), whose sum is σ = 73242000000. Its totient is φ = 12499500000.

The previous prime is 31249374983. The next prime is 31249375007. The reversal of 31249375000 is 57394213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31249375007) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 600001 + ... + 649999.

It is an arithmetic number, because the mean of its divisors is an integer number (1144406250).

Almost surely, 2^31249375000 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 31249375000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36621000000).

31249375000 is an abundant number, since it is smaller than the sum of its proper divisors (41992625000).

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

31249375000 is an frugal number, since it uses more digits than its factorization.

31249375000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50040 (or 50006 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The spelling of 31249375000 in words is "thirty-one billion, two hundred forty-nine million, three hundred seventy-five thousand".