1005350321 has 4 divisors (see below), whose sum is σ = 1006297152. Its totient is φ = 1004403492.

The previous prime is 1005350237. The next prime is 1005350323. The reversal of 1005350321 is 1230535001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1230535001 = 11311 ⋅108791.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1005350321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1005350293 and 1005350302.

It is not an unprimeable number, because it can be changed into a prime (1005350323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471821 + ... + 473946.

It is an arithmetic number, because the mean of its divisors is an integer number (251574288).

Almost surely, 2^1005350321 is an apocalyptic number.

It is an amenable number.

1005350321 is a deficient number, since it is larger than the sum of its proper divisors (946831).

1005350321 is an equidigital number, since it uses as much as digits as its factorization.

1005350321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946830.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 1005350321 is about 31707.2597523028. The cubic root of 1005350321 is about 1001.7802690945.

Adding to 1005350321 its reverse (1230535001), we get a palindrome (2235885322).

The spelling of 1005350321 in words is "one billion, five million, three hundred fifty thousand, three hundred twenty-one".