11231122431 has 16 divisors (see below), whose sum is σ = 15202678400. Its totient is φ = 7373554848.

The previous prime is 11231122393. The next prime is 11231122439. The reversal of 11231122431 is 13422113211.

It is not a de Polignac number, because 11231122431 - 2⁹ = 11231121919 is a prime.

It is a super-2 number, since 2×11231122431² (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 = 11231122398 and 11231122407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231122439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1035585 + ... + 1046373.

It is an arithmetic number, because the mean of its divisors is an integer number (950167400).

Almost surely, 2^11231122431 is an apocalyptic number.

11231122431 is a deficient number, since it is larger than the sum of its proper divisors (3971555969).

11231122431 is a wasteful number, since it uses less digits than its factorization.

11231122431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16038.

The product of its digits is 288, while the sum is 21.

Adding to 11231122431 its reverse (13422113211), we get a palindrome (24653235642).

The spelling of 11231122431 in words is "eleven billion, two hundred thirty-one million, one hundred twenty-two thousand, four hundred thirty-one".