1101311 has 4 divisors (see below), whose sum is σ = 1166112. Its totient is φ = 1036512.

The previous prime is 1101307. The next prime is 1101319. The reversal of 1101311 is 1131011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1131011 = 7 ⋅161573.

It is a cyclic number.

It is not a de Polignac number, because 1101311 - 2² = 1101307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101319) 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, 32375 + ... + 32408.

It is an arithmetic number, because the mean of its divisors is an integer number (291528).

2^1101311 is an apocalyptic number.

1101311 is a deficient number, since it is larger than the sum of its proper divisors (64801).

1101311 is an equidigital number, since it uses as much as digits as its factorization.

1101311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64800.

The product of its (nonzero) digits is 3, while the sum is 8.

The square root of 1101311 is about 1049.4336567883. The cubic root of 1101311 is about 103.2690049381.

Adding to 1101311 its reverse (1131011), we get a palindrome (2232322).

The spelling of 1101311 in words is "one million, one hundred one thousand, three hundred eleven".