11911241003 has 4 divisors (see below), whose sum is σ = 12034037400. Its totient is φ = 11788444608.

The previous prime is 11911240997. The next prime is 11911241009. The reversal of 11911241003 is 30014211911.

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

It is an interprime number because it is at equal distance from previous prime (11911240997) and next prime (11911241009).

It is a cyclic number.

It is not a de Polignac number, because 11911241003 - 2⁴ = 11911240987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11911241003.

It is not an unprimeable number, because it can be changed into a prime (11911241009) 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, 61398053 + ... + 61398246.

It is an arithmetic number, because the mean of its divisors is an integer number (3008509350).

Almost surely, 2^11911241003 is an apocalyptic number.

11911241003 is a deficient number, since it is larger than the sum of its proper divisors (122796397).

11911241003 is an equidigital number, since it uses as much as digits as its factorization.

11911241003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122796396.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 11911241003 its reverse (30014211911), we get a palindrome (41925452914).

The spelling of 11911241003 in words is "eleven billion, nine hundred eleven million, two hundred forty-one thousand, three".