11321304423 has 72 divisors (see below), whose sum is σ = 18100310400. Its totient is φ = 6239376000.

The previous prime is 11321304419. The next prime is 11321304443. The reversal of 11321304423 is 32440312311.

It is a happy number.

It is not a de Polignac number, because 11321304423 - 2² = 11321304419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11321304393 and 11321304402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321304443) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 56890878 + ... + 56891076.

It is an arithmetic number, because the mean of its divisors is an integer number (251393200).

Almost surely, 2^11321304423 is an apocalyptic number.

11321304423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11321304423 is a deficient number, since it is larger than the sum of its proper divisors (6779005977).

11321304423 is a wasteful number, since it uses less digits than its factorization.

11321304423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 11321304423 its reverse (32440312311), we get a palindrome (43761616734).

The spelling of 11321304423 in words is "eleven billion, three hundred twenty-one million, three hundred four thousand, four hundred twenty-three".