1111320311 has 12 divisors (see below), whose sum is σ = 1205670048. Its totient is φ = 1023681792.

The previous prime is 1111320269. The next prime is 1111320313. The reversal of 1111320311 is 1130231111.

It is a happy number.

It is not a de Polignac number, because 1111320311 - 2¹⁸ = 1111058167 is a prime.

It is a super-2 number, since 2×1111320311² = 2470065667282273442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111320313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27326 + ... + 54491.

It is an arithmetic number, because the mean of its divisors is an integer number (100472504).

Almost surely, 2^1111320311 is an apocalyptic number.

1111320311 is a deficient number, since it is larger than the sum of its proper divisors (94349737).

1111320311 is an equidigital number, since it uses as much as digits as its factorization.

1111320311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81898 (or 81881 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1111320311 is about 33336.4711839751. The cubic root of 1111320311 is about 1035.8091678416.

Adding to 1111320311 its reverse (1130231111), we get a palindrome (2241551422).

The spelling of 1111320311 in words is "one billion, one hundred eleven million, three hundred twenty thousand, three hundred eleven".