11321130131231 has 4 divisors (see below), whose sum is σ = 11321554376832. Its totient is φ = 11320705885632.

The previous prime is 11321130131161. The next prime is 11321130131249. The reversal of 11321130131231 is 13213103112311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11321130131231 - 2¹⁸ = 11321129869087 is a prime.

It is a super-2 number, since 2×11321130131231² (a number of 27 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 = 11321130131197 and 11321130131206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321130134231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212082770 + ... + 212136143.

It is an arithmetic number, because the mean of its divisors is an integer number (2830388594208).

Almost surely, 2^{11321130131231} is an apocalyptic number.

11321130131231 is a deficient number, since it is larger than the sum of its proper divisors (424245601).

11321130131231 is an equidigital number, since it uses as much as digits as its factorization.

11321130131231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424245600.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 11321130131231 its reverse (13213103112311), we get a palindrome (24534233243542).

The spelling of 11321130131231 in words is "eleven trillion, three hundred twenty-one billion, one hundred thirty million, one hundred thirty-one thousand, two hundred thirty-one".