11321322231 has 8 divisors (see below), whose sum is σ = 15096150640. Its totient is φ = 7547020992.

The previous prime is 11321322191. The next prime is 11321322241. The reversal of 11321322231 is 13222312311.

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

It is not a de Polignac number, because 11321322231 - 2⁹ = 11321321719 is a prime.

It is a super-2 number, since 2×11321322231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11321322198 and 11321322207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321322241) 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, 78616 + ... + 169773.

It is an arithmetic number, because the mean of its divisors is an integer number (1887018830).

Almost surely, 2^11321322231 is an apocalyptic number.

11321322231 is a deficient number, since it is larger than the sum of its proper divisors (3774828409).

11321322231 is a wasteful number, since it uses less digits than its factorization.

11321322231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263585.

The product of its digits is 432, while the sum is 21.

Adding to 11321322231 its reverse (13222312311), we get a palindrome (24543634542).

The spelling of 11321322231 in words is "eleven billion, three hundred twenty-one million, three hundred twenty-two thousand, two hundred thirty-one".