2403123320 has 64 divisors (see below), whose sum is σ = 5858032320. Its totient is φ = 881961984.

The previous prime is 2403123311. The next prime is 2403123347. The reversal of 2403123320 is 233213042.

It is a super-2 number, since 2×2403123320² = 11550003382255644800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2403123292 and 2403123301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73004 + ... + 100676.

It is an arithmetic number, because the mean of its divisors is an integer number (91531755).

Almost surely, 2^2403123320 is an apocalyptic number.

2403123320 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 2403123320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2929016160).

2403123320 is an abundant number, since it is smaller than the sum of its proper divisors (3454909000).

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

2403123320 is a wasteful number, since it uses less digits than its factorization.

2403123320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27864 (or 27860 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 2403123320 is about 49021.6617425399. The cubic root of 2403123320 is about 1339.4464409911.

Adding to 2403123320 its reverse (233213042), we get a palindrome (2636336362).

The spelling of 2403123320 in words is "two billion, four hundred three million, one hundred twenty-three thousand, three hundred twenty".