1100031420 has 48 divisors (see below), whose sum is σ = 3087913248. Its totient is φ = 292596480.

The previous prime is 1100031319. The next prime is 1100031469. The reversal of 1100031420 is 241300011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1100031396 and 1100031405.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 730 + ... + 46910.

It is an arithmetic number, because the mean of its divisors is an integer number (64331526).

Almost surely, 2^1100031420 is an apocalyptic number.

1100031420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100031420 is an abundant number, since it is smaller than the sum of its proper divisors (1987881828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1100031420 is a wasteful number, since it uses less digits than its factorization.

1100031420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46590 (or 46588 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1100031420 is about 33166.7215744939. The cubic root of 1100031420 is about 1032.2899439207.

Adding to 1100031420 its reverse (241300011), we get a palindrome (1341331431).

The spelling of 1100031420 in words is "one billion, one hundred million, thirty-one thousand, four hundred twenty".