11431030111 has 4 divisors (see below), whose sum is σ = 11437007472. Its totient is φ = 11425052752.

The previous prime is 11431030109. The next prime is 11431030123. The reversal of 11431030111 is 11103013411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11103013411 = 7 ⋅1586144773.

It is a cyclic number.

It is not a de Polignac number, because 11431030111 - 2¹ = 11431030109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11431030141) 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, 2985811 + ... + 2989636.

It is an arithmetic number, because the mean of its divisors is an integer number (2859251868).

Almost surely, 2^11431030111 is an apocalyptic number.

11431030111 is a deficient number, since it is larger than the sum of its proper divisors (5977361).

11431030111 is an equidigital number, since it uses as much as digits as its factorization.

11431030111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5977360.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11431030111 its reverse (11103013411), we get a palindrome (22534043522).

The spelling of 11431030111 in words is "eleven billion, four hundred thirty-one million, thirty thousand, one hundred eleven".