1100404031 has 4 divisors (see below), whose sum is σ = 1100470392. Its totient is φ = 1100337672.

The previous prime is 1100404027. The next prime is 1100404037. The reversal of 1100404031 is 1304040011.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 1100404031 - 2² = 1100404027 is a prime.

It is a super-2 number, since 2×1100404031² = 2421778062882097922, 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 = 1100403997 and 1100404015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100404037) 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, 15521 + ... + 49413.

It is an arithmetic number, because the mean of its divisors is an integer number (275117598).

Almost surely, 2^1100404031 is an apocalyptic number.

1100404031 is a deficient number, since it is larger than the sum of its proper divisors (66361).

1100404031 is an equidigital number, since it uses as much as digits as its factorization.

1100404031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66360.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1100404031 is about 33172.3383408526. The cubic root of 1100404031 is about 1032.4064857939.

Adding to 1100404031 its reverse (1304040011), we get a palindrome (2404444042).

The spelling of 1100404031 in words is "one billion, one hundred million, four hundred four thousand, thirty-one".