231013203 has 4 divisors (see below), whose sum is σ = 308017608. Its totient is φ = 154008800.

The previous prime is 231013199. The next prime is 231013247. The reversal of 231013203 is 302310132.

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 231013203 - 2² = 231013199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231013103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38502198 + ... + 38502203.

It is an arithmetic number, because the mean of its divisors is an integer number (77004402).

Almost surely, 2^231013203 is an apocalyptic number.

231013203 is a deficient number, since it is larger than the sum of its proper divisors (77004405).

231013203 is an equidigital number, since it uses as much as digits as its factorization.

231013203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77004404.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 231013203 is about 15199.1184941759. The cubic root of 231013203 is about 613.5909336234.

Adding to 231013203 its reverse (302310132), we get a palindrome (533323335).

The spelling of 231013203 in words is "two hundred thirty-one million, thirteen thousand, two hundred three".