3130321 has 4 divisors (see below), whose sum is σ = 3142144. Its totient is φ = 3118500.

The previous prime is 3130297. The next prime is 3130327. The reversal of 3130321 is 1230313.

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: 1230313 = 7 ⋅175759.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3130321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3130327) 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 3 ways as a sum of consecutive naturals, for example, 5505 + ... + 6046.

It is an arithmetic number, because the mean of its divisors is an integer number (785536).

Almost surely, 2^3130321 is an apocalyptic number.

It is an amenable number.

3130321 is a deficient number, since it is larger than the sum of its proper divisors (11823).

3130321 is a wasteful number, since it uses less digits than its factorization.

3130321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11822.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 3130321 is about 1769.2713189333. The cubic root of 3130321 is about 146.2838195828.

Adding to 3130321 its reverse (1230313), we get a palindrome (4360634).

The spelling of 3130321 in words is "three million, one hundred thirty thousand, three hundred twenty-one".