11731819123 has 8 divisors (see below), whose sum is σ = 12302618400. Its totient is φ = 11172103488.

The previous prime is 11731819111. The next prime is 11731819147. The reversal of 11731819123 is 32191813711.

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

It is a cyclic number.

It is not a de Polignac number, because 11731819123 - 2⁹ = 11731818611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11731819223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2768743 + ... + 2772976.

It is an arithmetic number, because the mean of its divisors is an integer number (1537827300).

Almost surely, 2^11731819123 is an apocalyptic number.

11731819123 is a deficient number, since it is larger than the sum of its proper divisors (570799277).

11731819123 is an equidigital number, since it uses as much as digits as its factorization.

11731819123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5541821.

The product of its digits is 9072, while the sum is 37.

The spelling of 11731819123 in words is "eleven billion, seven hundred thirty-one million, eight hundred nineteen thousand, one hundred twenty-three".