231220124 has 12 divisors (see below), whose sum is σ = 404779200. Its totient is φ = 115568928.

The previous prime is 231220097. The next prime is 231220153. The reversal of 231220124 is 421022132.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 4832 + ... + 22040.

It is an arithmetic number, because the mean of its divisors is an integer number (33731600).

Almost surely, 2^231220124 is an apocalyptic number.

It is an amenable number.

231220124 is a deficient number, since it is larger than the sum of its proper divisors (173559076).

231220124 is a wasteful number, since it uses less digits than its factorization.

231220124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20572 (or 20570 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 231220124 is about 15205.9239771873. The cubic root of 231220124 is about 613.7740789427.

Adding to 231220124 its reverse (421022132), we get a palindrome (652242256).

The spelling of 231220124 in words is "two hundred thirty-one million, two hundred twenty thousand, one hundred twenty-four".