1111311210311 has 4 divisors (see below), whose sum is σ = 1138416361824. Its totient is φ = 1084206058800.

The previous prime is 1111311210287. The next prime is 1111311210349. The reversal of 1111311210311 is 1130121131111.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1111311210311 - 2¹⁰ = 1111311209287 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 1111311210311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111311210011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13552575695 + ... + 13552575776.

It is an arithmetic number, because the mean of its divisors is an integer number (284604090456).

Almost surely, 2^{1111311210311} is an apocalyptic number.

1111311210311 is a deficient number, since it is larger than the sum of its proper divisors (27105151513).

1111311210311 is an equidigital number, since it uses as much as digits as its factorization.

1111311210311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27105151512.

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

Adding to 1111311210311 its reverse (1130121131111), we get a palindrome (2241432341422).

The spelling of 1111311210311 in words is "one trillion, one hundred eleven billion, three hundred eleven million, two hundred ten thousand, three hundred eleven".