23144243220 has 72 divisors (see below), whose sum is σ = 80233380864. Its totient is φ = 5290112448.

The previous prime is 23144243201. The next prime is 23144243249. The reversal of 23144243220 is 2234244132.

23144243220 is a `hidden beast` number, since 2 + 3 + 14 + 424 + 3 + 220 = 666.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 9182964 + ... + 9185483.

It is an arithmetic number, because the mean of its divisors is an integer number (1114352512).

Almost surely, 2^23144243220 is an apocalyptic number.

23144243220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23144243220 is an abundant number, since it is smaller than the sum of its proper divisors (57089137644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23144243220 is a wasteful number, since it uses less digits than its factorization.

23144243220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18368469 (or 18368464 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 23144243220 its reverse (2234244132), we get a palindrome (25378487352).

The spelling of 23144243220 in words is "twenty-three billion, one hundred forty-four million, two hundred forty-three thousand, two hundred twenty".