1111201311 has 32 divisors (see below), whose sum is σ = 1753145856. Its totient is φ = 618368000.

The previous prime is 1111201309. The next prime is 1111201319. The reversal of 1111201311 is 1131021111.

1111201311 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1111201311 - 2¹ = 1111201309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111201319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1155 + ... + 47156.

It is an arithmetic number, because the mean of its divisors is an integer number (54785808).

Almost surely, 2^1111201311 is an apocalyptic number.

1111201311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1111201311 is a deficient number, since it is larger than the sum of its proper divisors (641944545).

1111201311 is a wasteful number, since it uses less digits than its factorization.

1111201311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48383.

The product of its (nonzero) digits is 6, while the sum is 12.

The square root of 1111201311 is about 33334.6863042087. The cubic root of 1111201311 is about 1035.7721950956.

Adding to 1111201311 its reverse (1131021111), we get a palindrome (2242222422).

The spelling of 1111201311 in words is "one billion, one hundred eleven million, two hundred one thousand, three hundred eleven".