231145063 has 4 divisors (see below), whose sum is σ = 231934248. Its totient is φ = 230355880.

The previous prime is 231144983. The next prime is 231145069. The reversal of 231145063 is 360541132.

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 231145063 - 2²¹ = 229047911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231145069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394153 + ... + 394738.

It is an arithmetic number, because the mean of its divisors is an integer number (57983562).

Almost surely, 2^231145063 is an apocalyptic number.

231145063 is a deficient number, since it is larger than the sum of its proper divisors (789185).

231145063 is an equidigital number, since it uses as much as digits as its factorization.

231145063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789184.

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

The square root of 231145063 is about 15203.4556269290. The cubic root of 231145063 is about 613.7076552515.

Adding to 231145063 its reverse (360541132), we get a palindrome (591686195).

It can be divided in two parts, 2311 and 45063, that added together give a palindrome (47374).

The spelling of 231145063 in words is "two hundred thirty-one million, one hundred forty-five thousand, sixty-three".