11403113311 has 4 divisors (see below), whose sum is σ = 11403379624. Its totient is φ = 11402847000.

The previous prime is 11403113243. The next prime is 11403113317. The reversal of 11403113311 is 11331130411.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11403113311 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 (11403113317) 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, 52740 + ... + 159961.

It is an arithmetic number, because the mean of its divisors is an integer number (2850844906).

Almost surely, 2^11403113311 is an apocalyptic number.

11403113311 is a deficient number, since it is larger than the sum of its proper divisors (266313).

11403113311 is an equidigital number, since it uses as much as digits as its factorization.

11403113311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266312.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 11403113311 its reverse (11331130411), we get a palindrome (22734243722).

The spelling of 11403113311 in words is "eleven billion, four hundred three million, one hundred thirteen thousand, three hundred eleven".