2321355540 has 96 divisors (see below), whose sum is σ = 7437717504. Its totient is φ = 529925760.

The previous prime is 2321355527. The next prime is 2321355551. The reversal of 2321355540 is 455531232.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2321355498 and 2321355507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 379587 + ... + 385653.

It is an arithmetic number, because the mean of its divisors is an integer number (77476224).

Almost surely, 2^2321355540 is an apocalyptic number.

2321355540 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 2321355540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3718858752).

2321355540 is an abundant number, since it is smaller than the sum of its proper divisors (5116361964).

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

2321355540 is a wasteful number, since it uses less digits than its factorization.

2321355540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6997 (or 6995 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 2321355540 is about 48180.4476940595. The cubic root of 2321355540 is about 1324.0789687993.

Adding to 2321355540 its reverse (455531232), we get a palindrome (2776886772).

The spelling of 2321355540 in words is "two billion, three hundred twenty-one million, three hundred fifty-five thousand, five hundred forty".