11311312001111 has 8 divisors (see below), whose sum is σ = 11979970948944. Its totient is φ = 10643018348160.

The previous prime is 11311312001107. The next prime is 11311312001159. The reversal of 11311312001111 is 11110021311311.

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 not a de Polignac number, because 11311312001111 - 2² = 11311312001107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 11311312001111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311312000111) 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, 91259960 + ... + 91383821.

It is an arithmetic number, because the mean of its divisors is an integer number (1497496368618).

Almost surely, 2^{11311312001111} is an apocalyptic number.

11311312001111 is a deficient number, since it is larger than the sum of its proper divisors (668658947833).

11311312001111 is a wasteful number, since it uses less digits than its factorization.

11311312001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182647441.

The product of its (nonzero) digits is 18, while the sum is 17.

Adding to 11311312001111 its reverse (11110021311311), we get a palindrome (22421333312422).

The spelling of 11311312001111 in words is "eleven trillion, three hundred eleven billion, three hundred twelve million, one thousand, one hundred eleven".