11403112231 has 4 divisors (see below), whose sum is σ = 13032128272. Its totient is φ = 9774096192.

The previous prime is 11403112229. The next prime is 11403112267. The reversal of 11403112231 is 13221130411.

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

It is not a de Polignac number, because 11403112231 - 2¹ = 11403112229 is a prime.

It is a super-2 number, since 2×11403112231² (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 = 11403112199 and 11403112208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11403112291) 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, 814508010 + ... + 814508023.

It is an arithmetic number, because the mean of its divisors is an integer number (3258032068).

Almost surely, 2^11403112231 is an apocalyptic number.

11403112231 is a deficient number, since it is larger than the sum of its proper divisors (1629016041).

11403112231 is an equidigital number, since it uses as much as digits as its factorization.

11403112231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629016040.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 11403112231 its reverse (13221130411), we get a palindrome (24624242642).

The spelling of 11403112231 in words is "eleven billion, four hundred three million, one hundred twelve thousand, two hundred thirty-one".