231326603 has 4 divisors (see below), whose sum is σ = 231415320. Its totient is φ = 231237888.

The previous prime is 231326593. The next prime is 231326611. The reversal of 231326603 is 306623132.

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

It is a cyclic number.

It is not a de Polignac number, because 231326603 - 2⁴ = 231326587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231329603) 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, 40325 + ... + 45702.

It is an arithmetic number, because the mean of its divisors is an integer number (57853830).

Almost surely, 2^231326603 is an apocalyptic number.

231326603 is a deficient number, since it is larger than the sum of its proper divisors (88717).

231326603 is an equidigital number, since it uses as much as digits as its factorization.

231326603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88716.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 231326603 is about 15209.4248083220. The cubic root of 231326603 is about 613.8682806923.

Adding to 231326603 its reverse (306623132), we get a palindrome (537949735).

The spelling of 231326603 in words is "two hundred thirty-one million, three hundred twenty-six thousand, six hundred three".