1311004321 has 8 divisors (see below), whose sum is σ = 1430462304. Its totient is φ = 1191592320.

The previous prime is 1311004309. The next prime is 1311004333. The reversal of 1311004321 is 1234001131.

It is an interprime number because it is at equal distance from previous prime (1311004309) and next prime (1311004333).

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 1311004321 - 2⁷ = 1311004193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311004295 and 1311004304.

It is not an unprimeable number, because it can be changed into a prime (1311104321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79441 + ... + 94513.

It is an arithmetic number, because the mean of its divisors is an integer number (178807788).

Almost surely, 2^1311004321 is an apocalyptic number.

1311004321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1311004321 is a deficient number, since it is larger than the sum of its proper divisors (119457983).

1311004321 is a wasteful number, since it uses less digits than its factorization.

1311004321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22991.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1311004321 is about 36207.7936499865. The cubic root of 1311004321 is about 1094.4637313485.

Adding to 1311004321 its reverse (1234001131), we get a palindrome (2545005452).

The spelling of 1311004321 in words is "one billion, three hundred eleven million, four thousand, three hundred twenty-one".