11811318423 has 8 divisors (see below), whose sum is σ = 15764224368. Its totient is φ = 7866312384.

The previous prime is 11811318419. The next prime is 11811318439. The reversal of 11811318423 is 32481311811.

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

It is not a de Polignac number, because 11811318423 - 2² = 11811318419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11811318223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1971486 + ... + 1977467.

It is an arithmetic number, because the mean of its divisors is an integer number (1970528046).

Almost surely, 2^11811318423 is an apocalyptic number.

11811318423 is a deficient number, since it is larger than the sum of its proper divisors (3952905945).

11811318423 is an equidigital number, since it uses as much as digits as its factorization.

11811318423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3949953.

The product of its digits is 4608, while the sum is 33.

The spelling of 11811318423 in words is "eleven billion, eight hundred eleven million, three hundred eighteen thousand, four hundred twenty-three".