231013423 has 4 divisors (see below), whose sum is σ = 231223968. Its totient is φ = 230802880.

The previous prime is 231013417. The next prime is 231013439. The reversal of 231013423 is 324310132.

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-231013423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231013423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231013463) 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, 103618 + ... + 105823.

It is an arithmetic number, because the mean of its divisors is an integer number (57805992).

Almost surely, 2^231013423 is an apocalyptic number.

231013423 is a deficient number, since it is larger than the sum of its proper divisors (210545).

231013423 is a wasteful number, since it uses less digits than its factorization.

231013423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210544.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 231013423 is about 15199.1257314360. The cubic root of 231013423 is about 613.5911284029.

Adding to 231013423 its reverse (324310132), we get a palindrome (555323555).

The spelling of 231013423 in words is "two hundred thirty-one million, thirteen thousand, four hundred twenty-three".