11403031320 has 96 divisors (see below), whose sum is σ = 38255368320. Its totient is φ = 2942714880.

The previous prime is 11403031309. The next prime is 11403031349. The reversal of 11403031320 is 2313030411.

11403031320 is a `hidden beast` number, since 1 + 1 + 40 + 303 + 1 + 320 = 666.

11403031320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11403031293 and 11403031302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 499729 + ... + 522048.

It is an arithmetic number, because the mean of its divisors is an integer number (398493420).

Almost surely, 2^11403031320 is an apocalyptic number.

11403031320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11403031320 is an abundant number, since it is smaller than the sum of its proper divisors (26852337000).

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

11403031320 is a wasteful number, since it uses less digits than its factorization.

11403031320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021825 (or 1021818 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 11403031320 its reverse (2313030411), we get a palindrome (13716061731).

Subtracting from 11403031320 its reverse (2313030411), we obtain a palindrome (9090000909).

The spelling of 11403031320 in words is "eleven billion, four hundred three million, thirty-one thousand, three hundred twenty".