231403603 has 4 divisors (see below), whose sum is σ = 243582760. Its totient is φ = 219224448.

The previous prime is 231403577. The next prime is 231403619. The reversal of 231403603 is 306304132.

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-231403603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231403663) 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, 6089550 + ... + 6089587.

It is an arithmetic number, because the mean of its divisors is an integer number (60895690).

Almost surely, 2^231403603 is an apocalyptic number.

231403603 is a deficient number, since it is larger than the sum of its proper divisors (12179157).

231403603 is a wasteful number, since it uses less digits than its factorization.

231403603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12179156.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 231403603 is about 15211.9559228917. The cubic root of 231403603 is about 613.9363844230.

Adding to 231403603 its reverse (306304132), we get a palindrome (537707735).

The spelling of 231403603 in words is "two hundred thirty-one million, four hundred three thousand, six hundred three".