1105440031 has 4 divisors (see below), whose sum is σ = 1105506864. Its totient is φ = 1105373200.

The previous prime is 1105440019. The next prime is 1105440041. The reversal of 1105440031 is 1300445011.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1300445011 = 41 ⋅31718171.

It is a cyclic number.

It is not a de Polignac number, because 1105440031 - 2⁵ = 1105439999 is a prime.

It is a super-2 number, since 2×1105440031² = 2443995324274561922, 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 = 1105439990 and 1105440008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105440041) 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, 11691 + ... + 48451.

It is an arithmetic number, because the mean of its divisors is an integer number (276376716).

Almost surely, 2^1105440031 is an apocalyptic number.

1105440031 is a deficient number, since it is larger than the sum of its proper divisors (66833).

1105440031 is an equidigital number, since it uses as much as digits as its factorization.

1105440031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66832.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1105440031 is about 33248.1583098974. The cubic root of 1105440031 is about 1033.9790257098.

Adding to 1105440031 its reverse (1300445011), we get a palindrome (2405885042).

The spelling of 1105440031 in words is "one billion, one hundred five million, four hundred forty thousand, thirty-one".