1100234321 has 4 divisors (see below), whose sum is σ = 1100307252. Its totient is φ = 1100161392.

The previous prime is 1100234297. The next prime is 1100234323. The reversal of 1100234321 is 1234320011.

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: 1234320011 = 29 ⋅42562759.

It can be written as a sum of positive squares in 2 ways, for example, as 872375296 + 227859025 = 29536^2 + 15095^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100234321 - 2¹⁸ = 1099972177 is a prime.

It is a super-2 number, since 2×1100234321² = 2421031122212662082, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1100234321.

It is not an unprimeable number, because it can be changed into a prime (1100234323) 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 3 ways as a sum of consecutive naturals, for example, 4490 + ... + 47123.

It is an arithmetic number, because the mean of its divisors is an integer number (275076813).

Almost surely, 2^1100234321 is an apocalyptic number.

It is an amenable number.

1100234321 is a deficient number, since it is larger than the sum of its proper divisors (72931).

1100234321 is an equidigital number, since it uses as much as digits as its factorization.

1100234321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72930.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1100234321 is about 33169.7802374390. The cubic root of 1100234321 is about 1032.3534087096.

Adding to 1100234321 its reverse (1234320011), we get a palindrome (2334554332).

The spelling of 1100234321 in words is "one billion, one hundred million, two hundred thirty-four thousand, three hundred twenty-one".