231030506 has 8 divisors (see below), whose sum is σ = 396052320. Its totient is φ = 99013068.

The previous prime is 231030497. The next prime is 231030517. The reversal of 231030506 is 605030132.

231030506 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8251076 + ... + 8251103.

It is an arithmetic number, because the mean of its divisors is an integer number (49506540).

Almost surely, 2^231030506 is an apocalyptic number.

231030506 is a deficient number, since it is larger than the sum of its proper divisors (165021814).

231030506 is a wasteful number, since it uses less digits than its factorization.

231030506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16502188.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 231030506 is about 15199.6876941600. The cubic root of 231030506 is about 613.6062526596.

Adding to 231030506 its reverse (605030132), we get a palindrome (836060638).

The spelling of 231030506 in words is "two hundred thirty-one million, thirty thousand, five hundred six".