10340321 has 2 divisors, whose sum is σ = 10340322. Its totient is φ = 10340320.

The previous prime is 10340299. The next prime is 10340347. The reversal of 10340321 is 12304301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10336225 + 4096 = 3215^2 + 64^2 .

It is an emirp because it is prime and its reverse (12304301) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10340321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10340296 and 10340305.

It is not a weakly prime, because it can be changed into another prime (10340381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5170160 + 5170161.

It is an arithmetic number, because the mean of its divisors is an integer number (5170161).

Almost surely, 2^10340321 is an apocalyptic number.

It is an amenable number.

10340321 is a deficient number, since it is larger than the sum of its proper divisors (1).

10340321 is an equidigital number, since it uses as much as digits as its factorization.

10340321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 10340321 is about 3215.6369509010. The cubic root of 10340321 is about 217.8602546848.

Adding to 10340321 its reverse (12304301), we get a palindrome (22644622).

The spelling of 10340321 in words is "ten million, three hundred forty thousand, three hundred twenty-one".