231740463 has 4 divisors (see below), whose sum is σ = 308987288. Its totient is φ = 154493640.

The previous prime is 231740449. The next prime is 231740489. The reversal of 231740463 is 364047132.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 231740463 - 2⁹ = 231739951 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 231740463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231740263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38623408 + ... + 38623413.

It is an arithmetic number, because the mean of its divisors is an integer number (77246822).

Almost surely, 2^231740463 is an apocalyptic number.

231740463 is a deficient number, since it is larger than the sum of its proper divisors (77246825).

231740463 is an equidigital number, since it uses as much as digits as its factorization.

231740463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77246824.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 231740463 is about 15223.0241082382. The cubic root of 231740463 is about 614.2341474882.

Adding to 231740463 its reverse (364047132), we get a palindrome (595787595).

The spelling of 231740463 in words is "two hundred thirty-one million, seven hundred forty thousand, four hundred sixty-three".