11243402320 has 40 divisors (see below), whose sum is σ = 26380755720. Its totient is φ = 4456097280.

The previous prime is 11243402297. The next prime is 11243402327. The reversal of 11243402320 is 2320434211.

It can be written as a sum of positive squares in 4 ways, for example, as 5625600016 + 5617802304 = 75004^2 + 74952^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 11243402291 and 11243402300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11243402327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635971 + ... + 653410.

It is an arithmetic number, because the mean of its divisors is an integer number (659518893).

Almost surely, 2^11243402320 is an apocalyptic number.

11243402320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11243402320 is an abundant number, since it is smaller than the sum of its proper divisors (15137353400).

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

11243402320 is a wasteful number, since it uses less digits than its factorization.

11243402320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289503 (or 1289497 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 11243402320 its reverse (2320434211), we get a palindrome (13563836531).

The spelling of 11243402320 in words is "eleven billion, two hundred forty-three million, four hundred two thousand, three hundred twenty".