231449618 has 16 divisors (see below), whose sum is σ = 353134080. Its totient is φ = 113751456.

The previous prime is 231449593. The next prime is 231449717. The reversal of 231449618 is 816944132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33671 + ... + 39957.

It is an arithmetic number, because the mean of its divisors is an integer number (22070880).

Almost surely, 2^231449618 is an apocalyptic number.

231449618 is a deficient number, since it is larger than the sum of its proper divisors (121684462).

231449618 is a wasteful number, since it uses less digits than its factorization.

231449618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6601.

The product of its digits is 41472, while the sum is 38.

The square root of 231449618 is about 15213.4683093633. The cubic root of 231449618 is about 613.9770758240.

The spelling of 231449618 in words is "two hundred thirty-one million, four hundred forty-nine thousand, six hundred eighteen".