10311321 has 4 divisors (see below), whose sum is σ = 13748432. Its totient is φ = 6874212.

The previous prime is 10311307. The next prime is 10311341. The reversal of 10311321 is 12311301.

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: 12311301 = 3 ⋅4103767.

It is not a de Polignac number, because 10311321 - 2⁷ = 10311193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10311297 and 10311306.

It is not an unprimeable number, because it can be changed into a prime (10311341) 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, 1718551 + ... + 1718556.

It is an arithmetic number, because the mean of its divisors is an integer number (3437108).

Almost surely, 2^10311321 is an apocalyptic number.

It is an amenable number.

10311321 is a deficient number, since it is larger than the sum of its proper divisors (3437111).

10311321 is an equidigital number, since it uses as much as digits as its factorization.

10311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3437110.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 10311321 is about 3211.1245693682. The cubic root of 10311321 is about 217.6563969597.

Adding to 10311321 its reverse (12311301), we get a palindrome (22622622).

The spelling of 10311321 in words is "ten million, three hundred eleven thousand, three hundred twenty-one".