31522428000 has 576 divisors, whose sum is σ = 129832754688. Its totient is φ = 7093785600.

The previous prime is 31522427977. The next prime is 31522428013. The reversal of 31522428000 is 82422513.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16883067 + ... + 16884933.

It is an arithmetic number, because the mean of its divisors is an integer number (225404088).

Almost surely, 2^31522428000 is an apocalyptic number.

31522428000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31522428000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64916377344).

31522428000 is an abundant number, since it is smaller than the sum of its proper divisors (98310326688).

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

31522428000 is a wasteful number, since it uses less digits than its factorization.

31522428000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972 (or 1951 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The spelling of 31522428000 in words is "thirty-one billion, five hundred twenty-two million, four hundred twenty-eight thousand".