11321301231 has 12 divisors (see below), whose sum is σ = 16958657352. Its totient is φ = 7547533992.

The previous prime is 11321301223. The next prime is 11321301289. The reversal of 11321301231 is 13210312311.

11321301231 is a `hidden beast` number, since 1 + 132 + 1 + 301 + 231 = 666.

It is not a de Polignac number, because 11321301231 - 2³ = 11321301223 is a prime.

It is a super-2 number, since 2×11321301231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321301331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23294616 + ... + 23295101.

It is an arithmetic number, because the mean of its divisors is an integer number (1413221446).

Almost surely, 2^11321301231 is an apocalyptic number.

11321301231 is a deficient number, since it is larger than the sum of its proper divisors (5637356121).

11321301231 is an frugal number, since it uses more digits than its factorization.

11321301231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46589732 (or 46589720 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 11321301231 its reverse (13210312311), we get a palindrome (24531613542).

The spelling of 11321301231 in words is "eleven billion, three hundred twenty-one million, three hundred one thousand, two hundred thirty-one".