30831493056 has 336 divisors, whose sum is σ = 103518858240. Its totient is φ = 8025937920.

The previous prime is 30831493027. The next prime is 30831493111. The reversal of 30831493056 is 65039413803.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 30831492999 and 30831493017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9660421 + ... + 9663611.

It is an arithmetic number, because the mean of its divisors is an integer number (308091840).

Almost surely, 2^30831493056 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 30831493056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51759429120).

30831493056 is an abundant number, since it is smaller than the sum of its proper divisors (72687365184).

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

30831493056 is a wasteful number, since it uses less digits than its factorization.

30831493056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3312 (or 3295 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 30831493056 in words is "thirty billion, eight hundred thirty-one million, four hundred ninety-three thousand, fifty-six".