10243391 has 2 divisors, whose sum is σ = 10243392. Its totient is φ = 10243390.

The previous prime is 10243369. The next prime is 10243393. The reversal of 10243391 is 19334201.

It is a strong prime.

It is an emirp because it is prime and its reverse (19334201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10243391 is a prime.

Together with 10243393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10243393) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5121695 + 5121696.

It is an arithmetic number, because the mean of its divisors is an integer number (5121696).

Almost surely, 2^10243391 is an apocalyptic number.

10243391 is a deficient number, since it is larger than the sum of its proper divisors (1).

10243391 is an equidigital number, since it uses as much as digits as its factorization.

10243391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 10243391 is about 3200.5297998925. The cubic root of 10243391 is about 217.1773769690.

Adding to 10243391 its reverse (19334201), we get a palindrome (29577592).

The spelling of 10243391 in words is "ten million, two hundred forty-three thousand, three hundred ninety-one".