11321255231 has 8 divisors (see below), whose sum is σ = 13300495824. Its totient is φ = 9500353920.

The previous prime is 11321255207. The next prime is 11321255233. The reversal of 11321255231 is 13255212311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11321255231 - 2¹⁰ = 11321254207 is a prime.

It is a super-2 number, since 2×11321255231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11321255231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321255233) 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, 39584666 + ... + 39584951.

It is an arithmetic number, because the mean of its divisors is an integer number (1662561978).

Almost surely, 2^11321255231 is an apocalyptic number.

11321255231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11321255231 is a deficient number, since it is larger than the sum of its proper divisors (1979240593).

11321255231 is a wasteful number, since it uses less digits than its factorization.

11321255231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79169641.

The product of its digits is 1800, while the sum is 26.

Adding to 11321255231 its reverse (13255212311), we get a palindrome (24576467542).

The spelling of 11321255231 in words is "eleven billion, three hundred twenty-one million, two hundred fifty-five thousand, two hundred thirty-one".