1101123311 has 4 divisors (see below), whose sum is σ = 1112025624. Its totient is φ = 1090221000.

The previous prime is 1101123307. The next prime is 1101123319. The reversal of 1101123311 is 1133211011.

It is a happy number.

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 1101123311 - 2² = 1101123307 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 (1101123319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5451005 + ... + 5451206.

It is an arithmetic number, because the mean of its divisors is an integer number (278006406).

Almost surely, 2^1101123311 is an apocalyptic number.

1101123311 is a deficient number, since it is larger than the sum of its proper divisors (10902313).

1101123311 is a wasteful number, since it uses less digits than its factorization.

1101123311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10902312.

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

The square root of 1101123311 is about 33183.1781329034. The cubic root of 1101123311 is about 1032.6313812496.

Adding to 1101123311 its reverse (1133211011), we get a palindrome (2234334322).

The spelling of 1101123311 in words is "one billion, one hundred one million, one hundred twenty-three thousand, three hundred eleven".