1100401320 has 32 divisors (see below), whose sum is σ = 3301204320. Its totient is φ = 293440320.

The previous prime is 1100401307. The next prime is 1100401331. The reversal of 1100401320 is 231040011.

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 = 1100401296 and 1100401305.

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 7 ways as a sum of consecutive naturals, for example, 4584886 + ... + 4585125.

It is an arithmetic number, because the mean of its divisors is an integer number (103162635).

Almost surely, 2^1100401320 is an apocalyptic number.

1100401320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100401320 is an abundant number, since it is smaller than the sum of its proper divisors (2200803000).

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

1100401320 is a wasteful number, since it uses less digits than its factorization.

1100401320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9170025 (or 9170021 counting only the distinct ones).

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

The square root of 1100401320 is about 33172.2974784684. The cubic root of 1100401320 is about 1032.4056379671.

Adding to 1100401320 its reverse (231040011), we get a palindrome (1331441331).

The spelling of 1100401320 in words is "one billion, one hundred million, four hundred one thousand, three hundred twenty".