231605326 has 24 divisors (see below), whose sum is σ = 372938040. Its totient is φ = 107828496.

The previous prime is 231605317. The next prime is 231605357. The reversal of 231605326 is 623506132.

It is a junction number, because it is equal to n+sod(n) for n = 231605294 and 231605303.

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 39880 + ... + 45316.

It is an arithmetic number, because the mean of its divisors is an integer number (15539085).

Almost surely, 2^231605326 is an apocalyptic number.

231605326 is a deficient number, since it is larger than the sum of its proper divisors (141332714).

231605326 is a wasteful number, since it uses less digits than its factorization.

231605326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5536 (or 5517 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 231605326 is about 15218.5848882214. The cubic root of 231605326 is about 614.1147295572.

The spelling of 231605326 in words is "two hundred thirty-one million, six hundred five thousand, three hundred twenty-six".