11431443403 has 8 divisors (see below), whose sum is σ = 11700108288. Its totient is φ = 11162906664.

The previous prime is 11431443391. The next prime is 11431443449. The reversal of 11431443403 is 30434413411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11431443403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11431443203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162126 + ... + 221692.

It is an arithmetic number, because the mean of its divisors is an integer number (1462513536).

Almost surely, 2^11431443403 is an apocalyptic number.

11431443403 is a deficient number, since it is larger than the sum of its proper divisors (268664885).

11431443403 is an equidigital number, since it uses as much as digits as its factorization.

11431443403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64073.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 11431443403 its reverse (30434413411), we get a palindrome (41865856814).

The spelling of 11431443403 in words is "eleven billion, four hundred thirty-one million, four hundred forty-three thousand, four hundred three".