2321520000 has 320 divisors, whose sum is σ = 8173321200. Its totient is φ = 581632000.

The previous prime is 2321519957. The next prime is 2321520011. The reversal of 2321520000 is 251232.

It is a tau number, because it is divible by the number of its divisors (320).

It is a super-2 number, since 2×2321520000² = 10778910220800000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

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, 4079716 + ... + 4080284.

Almost surely, 2^2321520000 is an apocalyptic number.

2321520000 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 2321520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4086660600).

2321520000 is an abundant number, since it is smaller than the sum of its proper divisors (5851801200).

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

2321520000 is an equidigital number, since it uses as much as digits as its factorization.

2321520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623 (or 596 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 2321520000 is about 48182.1543727551. The cubic root of 2321520000 is about 1324.1102368639.

Adding to 2321520000 its reverse (251232), we get a palindrome (2321771232).

The spelling of 2321520000 in words is "two billion, three hundred twenty-one million, five hundred twenty thousand".