1000130321 has 4 divisors (see below), whose sum is σ = 1043614272. Its totient is φ = 956646372.

The previous prime is 1000130317. The next prime is 1000130323. The reversal of 1000130321 is 1230310001.

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.

It is a cyclic number.

It is not a de Polignac number, because 1000130321 - 2² = 1000130317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1000130323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21741941 + ... + 21741986.

It is an arithmetic number, because the mean of its divisors is an integer number (260903568).

Almost surely, 2^1000130321 is an apocalyptic number.

It is an amenable number.

1000130321 is a deficient number, since it is larger than the sum of its proper divisors (43483951).

1000130321 is an equidigital number, since it uses as much as digits as its factorization.

1000130321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43483950.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1000130321 is about 31624.8370904895. The cubic root of 1000130321 is about 1000.0434384464.

Adding to 1000130321 its reverse (1230310001), we get a palindrome (2230440322).

The spelling of 1000130321 in words is "one billion, one hundred thirty thousand, three hundred twenty-one".