1131101111 has 8 divisors (see below), whose sum is σ = 1322749824. Its totient is φ = 946968120.

The previous prime is 1131101093. The next prime is 1131101113. The reversal of 1131101111 is 1111011311.

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

It is not a de Polignac number, because 1131101111 - 2⁶ = 1131101047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131101092 and 1131101101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131101113) 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, 1878605 + ... + 1879206.

It is an arithmetic number, because the mean of its divisors is an integer number (165343728).

Almost surely, 2^1131101111 is an apocalyptic number.

1131101111 is a deficient number, since it is larger than the sum of its proper divisors (191648713).

1131101111 is an equidigital number, since it uses as much as digits as its factorization.

1131101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3757861.

The product of its (nonzero) digits is 3, while the sum is 11.

The square root of 1131101111 is about 33631.8466784088. The cubic root of 1131101111 is about 1041.9186447855.

Adding to 1131101111 its reverse (1111011311), we get a palindrome (2242112422).

The spelling of 1131101111 in words is "one billion, one hundred thirty-one million, one hundred one thousand, one hundred eleven".