231224330 has 32 divisors (see below), whose sum is σ = 427680000. Its totient is φ = 89957952.

The previous prime is 231224321. The next prime is 231224369. The reversal of 231224330 is 33422132.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114671 + ... + 116669.

It is an arithmetic number, because the mean of its divisors is an integer number (13365000).

Almost surely, 2^231224330 is an apocalyptic number.

231224330 is a deficient number, since it is larger than the sum of its proper divisors (196455670).

231224330 is a wasteful number, since it uses less digits than its factorization.

231224330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2318.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 231224330 is about 15206.0622779206. The cubic root of 231224330 is about 613.7778005307. Note that the first 3 decimals are identical.

Adding to 231224330 its reverse (33422132), we get a palindrome (264646462).

The spelling of 231224330 in words is "two hundred thirty-one million, two hundred twenty-four thousand, three hundred thirty".