11431240443 has 48 divisors (see below), whose sum is σ = 19597982976. Its totient is φ = 6284900160.

The previous prime is 11431240411. The next prime is 11431240459. The reversal of 11431240443 is 34404213411.

It is not a de Polignac number, because 11431240443 - 2⁵ = 11431240411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11431240343) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 150013 + ... + 212993.

It is an arithmetic number, because the mean of its divisors is an integer number (408291312).

Almost surely, 2^11431240443 is an apocalyptic number.

11431240443 is a deficient number, since it is larger than the sum of its proper divisors (8166742533).

11431240443 is a wasteful number, since it uses less digits than its factorization.

11431240443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63104 (or 63101 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 11431240443 its reverse (34404213411), we get a palindrome (45835453854).

The spelling of 11431240443 in words is "eleven billion, four hundred thirty-one million, two hundred forty thousand, four hundred forty-three".