1111431112131 has 8 divisors (see below), whose sum is σ = 1484220021264. Its totient is φ = 739798138880.

The previous prime is 1111431112117. The next prime is 1111431112133. The reversal of 1111431112131 is 1312111341111.

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 1111431112131 - 2⁹ = 1111431111619 is a prime.

It is a super-2 number, since 2×1111431112131² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1111431112098 and 1111431112107.

It is not an unprimeable number, because it can be changed into a prime (1111431112133) 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 7 ways as a sum of consecutive naturals, for example, 288981726 + ... + 288985571.

It is an arithmetic number, because the mean of its divisors is an integer number (185527502658).

Almost surely, 2^{1111431112131} is an apocalyptic number.

1111431112131 is a deficient number, since it is larger than the sum of its proper divisors (372788909133).

1111431112131 is an equidigital number, since it uses as much as digits as its factorization.

1111431112131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577967941.

The product of its digits is 72, while the sum is 21.

Adding to 1111431112131 its reverse (1312111341111), we get a palindrome (2423542453242).

The spelling of 1111431112131 in words is "one trillion, one hundred eleven billion, four hundred thirty-one million, one hundred twelve thousand, one hundred thirty-one".