1111311031011 has 4 divisors (see below), whose sum is σ = 1481748041352. Its totient is φ = 740874020672.

The previous prime is 1111311031007. The next prime is 1111311031031. The reversal of 1111311031011 is 1101301131111.

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 1111311031011 - 2² = 1111311031007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1111311031001) 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, 185218505166 + ... + 185218505171.

It is an arithmetic number, because the mean of its divisors is an integer number (370437010338).

Almost surely, 2^{1111311031011} is an apocalyptic number.

1111311031011 is a deficient number, since it is larger than the sum of its proper divisors (370437010341).

1111311031011 is an equidigital number, since it uses as much as digits as its factorization.

1111311031011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370437010340.

The product of its (nonzero) digits is 9, while the sum is 15.

Adding to 1111311031011 its reverse (1101301131111), we get a palindrome (2212612162122).

The spelling of 1111311031011 in words is "one trillion, one hundred eleven billion, three hundred eleven million, thirty-one thousand, eleven".