1101311123 has 8 divisors (see below), whose sum is σ = 1213095936. Its totient is φ = 991470600.

The previous prime is 1101311087. The next prime is 1101311129. The reversal of 1101311123 is 3211131011.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1101311123 - 2²⁰ = 1100262547 is a prime.

It is a super-2 number, since 2×1101311123² = 2425772379287042258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101311098 and 1101311107.

It is not an unprimeable number, because it can be changed into a prime (1101311129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 484883 + ... + 487148.

It is an arithmetic number, because the mean of its divisors is an integer number (151636992).

Almost surely, 2^1101311123 is an apocalyptic number.

1101311123 is a deficient number, since it is larger than the sum of its proper divisors (111784813).

1101311123 is a wasteful number, since it uses less digits than its factorization.

1101311123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972145.

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

The square root of 1101311123 is about 33186.0079400943. The cubic root of 1101311123 is about 1032.6900878260.

Adding to 1101311123 its reverse (3211131011), we get a palindrome (4312442134).

The spelling of 1101311123 in words is "one billion, one hundred one million, three hundred eleven thousand, one hundred twenty-three".