231145603 has 8 divisors (see below), whose sum is σ = 249409328. Its totient is φ = 212950944.

The previous prime is 231145601. The next prime is 231145609. The reversal of 231145603 is 306541132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231145603 - 2¹ = 231145601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231145601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10200 + ... + 23797.

It is an arithmetic number, because the mean of its divisors is an integer number (31176166).

Almost surely, 2^231145603 is an apocalyptic number.

231145603 is a deficient number, since it is larger than the sum of its proper divisors (18263725).

231145603 is a wasteful number, since it uses less digits than its factorization.

231145603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34533.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 231145603 is about 15203.4733860391. The cubic root of 231145603 is about 613.7081331648.

Adding to 231145603 its reverse (306541132), we get a palindrome (537686735).

The spelling of 231145603 in words is "two hundred thirty-one million, one hundred forty-five thousand, six hundred three".