31300010000 has 200 divisors, whose sum is σ = 90376370304. Its totient is φ = 10264320000.

The previous prime is 31300009991. The next prime is 31300010011. The reversal of 31300010000 is 1000313.

It is a tau number, because it is divible by the number of its divisors (200).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 31300010000.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1600280 + ... + 1619720.

Almost surely, 2^31300010000 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 31300010000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45188185152).

31300010000 is an abundant number, since it is smaller than the sum of its proper divisors (59076360304).

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

31300010000 is a wasteful number, since it uses less digits than its factorization.

31300010000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19499 (or 19478 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 8.

Adding to 31300010000 its reverse (1000313), we get a palindrome (31301010313).

The spelling of 31300010000 in words is "thirty-one billion, three hundred million, ten thousand".