10603391 has 4 divisors (see below), whose sum is σ = 11064432. Its totient is φ = 10142352.

The previous prime is 10603367. The next prime is 10603399. The reversal of 10603391 is 19330601.

10603391 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10603391 is a prime.

It is a super-2 number, since 2×10603391² = 224863801397762, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 461017 = 10603391 / (1 + 0 + 6 + 0 + 3 + 3 + 9 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10603399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230486 + ... + 230531.

It is an arithmetic number, because the mean of its divisors is an integer number (2766108).

Almost surely, 2^10603391 is an apocalyptic number.

10603391 is a deficient number, since it is larger than the sum of its proper divisors (461041).

10603391 is an equidigital number, since it uses as much as digits as its factorization.

10603391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461040.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 10603391 is about 3256.2848462627. The cubic root of 10603391 is about 219.6923454494.

Adding to 10603391 its reverse (19330601), we get a palindrome (29933992).

The spelling of 10603391 in words is "ten million, six hundred three thousand, three hundred ninety-one".