11403443231 has 2 divisors, whose sum is σ = 11403443232. Its totient is φ = 11403443230.

The previous prime is 11403443189. The next prime is 11403443281. The reversal of 11403443231 is 13234430411.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11403443231 - 2⁶ = 11403443167 is a prime.

It is a super-2 number, since 2×11403443231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11403443231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11403443281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5701721615 + 5701721616.

It is an arithmetic number, because the mean of its divisors is an integer number (5701721616).

Almost surely, 2^11403443231 is an apocalyptic number.

11403443231 is a deficient number, since it is larger than the sum of its proper divisors (1).

11403443231 is an equidigital number, since it uses as much as digits as its factorization.

11403443231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 11403443231 its reverse (13234430411), we get a palindrome (24637873642).

The spelling of 11403443231 in words is "eleven billion, four hundred three million, four hundred forty-three thousand, two hundred thirty-one".