231234305 has 4 divisors (see below), whose sum is σ = 277481172. Its totient is φ = 184987440.

The previous prime is 231234299. The next prime is 231234317. The reversal of 231234305 is 503432132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 164762896 + 66471409 = 12836^2 + 8153^2 .

It is a de Polignac number, because none of the positive numbers 2^k-231234305 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23123426 + ... + 23123435.

It is an arithmetic number, because the mean of its divisors is an integer number (69370293).

Almost surely, 2^231234305 is an apocalyptic number.

It is an amenable number.

231234305 is a deficient number, since it is larger than the sum of its proper divisors (46246867).

231234305 is an equidigital number, since it uses as much as digits as its factorization.

231234305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46246866.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 231234305 is about 15206.3902685680. The cubic root of 231234305 is about 613.7866265130.

Adding to 231234305 its reverse (503432132), we get a palindrome (734666437).

The spelling of 231234305 in words is "two hundred thirty-one million, two hundred thirty-four thousand, three hundred five".