231030305 has 16 divisors (see below), whose sum is σ = 304262784. Its totient is φ = 167009280.

The previous prime is 231030299. The next prime is 231030313. The reversal of 231030305 is 503030132.

231030305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231030305 - 2²⁶ = 163921441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3392 + ... + 21761.

It is an arithmetic number, because the mean of its divisors is an integer number (19016424).

Almost surely, 2^231030305 is an apocalyptic number.

It is an amenable number.

231030305 is a deficient number, since it is larger than the sum of its proper divisors (73232479).

231030305 is a wasteful number, since it uses less digits than its factorization.

231030305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25336.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 231030305 is about 15199.6810821806. The cubic root of 231030305 is about 613.6060747106.

Adding to 231030305 its reverse (503030132), we get a palindrome (734060437).

The spelling of 231030305 in words is "two hundred thirty-one million, thirty thousand, three hundred five".