21832231320 has 320 divisors, whose sum is σ = 75346951680. Its totient is φ = 5667335424.

The previous prime is 21832231303. The next prime is 21832231363. The reversal of 21832231320 is 2313223812.

It is a happy number.

21832231320 is a `hidden beast` number, since 2 + 1 + 8 + 322 + 313 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 46749727 + ... + 46750193.

It is an arithmetic number, because the mean of its divisors is an integer number (235459224).

Almost surely, 2^21832231320 is an apocalyptic number.

21832231320 is a gapful number since it is divisible by the number (20) 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 21832231320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37673475840).

21832231320 is an abundant number, since it is smaller than the sum of its proper divisors (53514720360).

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

21832231320 is a wasteful number, since it uses less digits than its factorization.

21832231320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844 (or 831 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The spelling of 21832231320 in words is "twenty-one billion, eight hundred thirty-two million, two hundred thirty-one thousand, three hundred twenty".