1045321321 has 8 divisors (see below), whose sum is σ = 1142989344. Its totient is φ = 948093120.

The previous prime is 1045321307. The next prime is 1045321351. The reversal of 1045321321 is 1231235401.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1045321321 - 2⁵ = 1045321289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1045321292 and 1045321301.

It is not an unprimeable number, because it can be changed into a prime (1045321301) 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 7 ways as a sum of consecutive naturals, for example, 104971 + ... + 114496.

It is an arithmetic number, because the mean of its divisors is an integer number (142873668).

Almost surely, 2^1045321321 is an apocalyptic number.

1045321321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1045321321 is a deficient number, since it is larger than the sum of its proper divisors (97668023).

1045321321 is a wasteful number, since it uses less digits than its factorization.

1045321321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219911.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1045321321 is about 32331.4293064813. The cubic root of 1045321321 is about 1014.8844606284.

Adding to 1045321321 its reverse (1231235401), we get a palindrome (2276556722).

The spelling of 1045321321 in words is "one billion, forty-five million, three hundred twenty-one thousand, three hundred twenty-one".