603391 has 2 divisors, whose sum is σ = 603392. Its totient is φ = 603390.

The previous prime is 603389. The next prime is 603401. The reversal of 603391 is 193306.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 603391 - 2¹ = 603389 is a prime.

Together with 603389, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (603311) 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, 301695 + 301696.

It is an arithmetic number, because the mean of its divisors is an integer number (301696).

2⁶⁰³³⁹¹ is an apocalyptic number.

603391 is a deficient number, since it is larger than the sum of its proper divisors (1).

603391 is an equidigital number, since it uses as much as digits as its factorization.

603391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 603391 is about 776.7824663315. The cubic root of 603391 is about 84.5018614718.

Adding to 603391 its reverse (193306), we get a palindrome (796697).

The spelling of 603391 in words is "six hundred three thousand, three hundred ninety-one".