20144123231 has 8 divisors (see below), whose sum is σ = 21401958720. Its totient is φ = 18923835168.

The previous prime is 20144123177. The next prime is 20144123243. The reversal of 20144123231 is 13232144102.

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

It is a cyclic number.

It is not a de Polignac number, because 20144123231 - 2¹⁴ = 20144106847 is a prime.

It is a super-2 number, since 2×20144123231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20144123197 and 20144123206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144126231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9385751 + ... + 9387896.

It is an arithmetic number, because the mean of its divisors is an integer number (2675244840).

Almost surely, 2^20144123231 is an apocalyptic number.

20144123231 is a deficient number, since it is larger than the sum of its proper divisors (1257835489).

20144123231 is a wasteful number, since it uses less digits than its factorization.

20144123231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18773713.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20144123231 its reverse (13232144102), we get a palindrome (33376267333).

The spelling of 20144123231 in words is "twenty billion, one hundred forty-four million, one hundred twenty-three thousand, two hundred thirty-one".