10931321 has 2 divisors, whose sum is σ = 10931322. Its totient is φ = 10931320.

The previous prime is 10931311. The next prime is 10931329. The reversal of 10931321 is 12313901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6786025 + 4145296 = 2605^2 + 2036^2 .

It is a cyclic number.

It is not a de Polignac number, because 10931321 - 2⁶ = 10931257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10931293 and 10931302.

It is not a weakly prime, because it can be changed into another prime (10931329) 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 as a sum of consecutive naturals, namely, 5465660 + 5465661.

It is an arithmetic number, because the mean of its divisors is an integer number (5465661).

Almost surely, 2^10931321 is an apocalyptic number.

It is an amenable number.

10931321 is a deficient number, since it is larger than the sum of its proper divisors (1).

10931321 is an equidigital number, since it uses as much as digits as its factorization.

10931321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 10931321 is about 3306.2548298641. The cubic root of 10931321 is about 221.9341917324.

The spelling of 10931321 in words is "ten million, nine hundred thirty-one thousand, three hundred twenty-one".