1000313321 has 4 divisors (see below), whose sum is σ = 1143215232. Its totient is φ = 857411412.

The previous prime is 1000313299. The next prime is 1000313323. The reversal of 1000313321 is 1233130001.

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: 1233130001 = 19 ⋅64901579.

It is a cyclic number.

It is not a de Polignac number, because 1000313321 - 2¹⁴ = 1000296937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000313296 and 1000313305.

It is not an unprimeable number, because it can be changed into a prime (1000313323) 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, 71450945 + ... + 71450958.

It is an arithmetic number, because the mean of its divisors is an integer number (285803808).

Almost surely, 2^1000313321 is an apocalyptic number.

It is an amenable number.

1000313321 is a deficient number, since it is larger than the sum of its proper divisors (142901911).

1000313321 is an equidigital number, since it uses as much as digits as its factorization.

1000313321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142901910.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 1000313321 is about 31627.7302536872. The cubic root of 1000313321 is about 1000.1044294274.

Adding to 1000313321 its reverse (1233130001), we get a palindrome (2233443322).

The spelling of 1000313321 in words is "one billion, three hundred thirteen thousand, three hundred twenty-one".