31030540000 has 120 divisors (see below), whose sum is σ = 76744871280. Its totient is φ = 12346368000.

The previous prime is 31030539983. The next prime is 31030540001. The reversal of 31030540000 is 4503013.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31030540001) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 3855981 + ... + 3864019.

It is an arithmetic number, because the mean of its divisors is an integer number (639540594).

Almost surely, 2^31030540000 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 31030540000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38372435640).

31030540000 is an abundant number, since it is smaller than the sum of its proper divisors (45714331280).

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

31030540000 is an equidigital number, since it uses as much as digits as its factorization.

31030540000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8262 (or 8239 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The spelling of 31030540000 in words is "thirty-one billion, thirty million, five hundred forty thousand".