231445306 has 8 divisors (see below), whose sum is σ = 347323284. Its totient is φ = 115670880.

The previous prime is 231445241. The next prime is 231445321. The reversal of 231445306 is 603544132.

It can be written as a sum of positive squares in 2 ways, for example, as 225270081 + 6175225 = 15009^2 + 2485^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 5.

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, 20035 + ... + 29398.

Almost surely, 2^231445306 is an apocalyptic number.

231445306 is a deficient number, since it is larger than the sum of its proper divisors (115877978).

231445306 is a wasteful number, since it uses less digits than its factorization.

231445306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51776.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 231445306 is about 15213.3265921691. The cubic root of 231445306 is about 613.9732629199.

Adding to 231445306 its reverse (603544132), we get a palindrome (834989438).

The spelling of 231445306 in words is "two hundred thirty-one million, four hundred forty-five thousand, three hundred six".