1028323001 has 4 divisors (see below), whose sum is σ = 1031608692. Its totient is φ = 1025037312.

The previous prime is 1028322989. The next prime is 1028323007. The reversal of 1028323001 is 1003238201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 254370601 + 773952400 = 15949^2 + 27820^2 .

It is a cyclic number.

It is not a de Polignac number, because 1028323001 - 2²² = 1024128697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028323007) 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, 1642376 + ... + 1643001.

It is an arithmetic number, because the mean of its divisors is an integer number (257902173).

Almost surely, 2^1028323001 is an apocalyptic number.

It is an amenable number.

1028323001 is a deficient number, since it is larger than the sum of its proper divisors (3285691).

1028323001 is an equidigital number, since it uses as much as digits as its factorization.

1028323001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3285690.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1028323001 is about 32067.4757503611. The cubic root of 1028323001 is about 1009.3532444020.

The spelling of 1028323001 in words is "one billion, twenty-eight million, three hundred twenty-three thousand, one".