20144342231 has 8 divisors (see below), whose sum is σ = 21703326624. Its totient is φ = 18586703520.

The previous prime is 20144342227. The next prime is 20144342243. The reversal of 20144342231 is 13224344102.

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 20144342231 - 2² = 20144342227 is a prime.

It is a super-2 number, since 2×20144342231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20144342231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144342201) 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, 305216 + ... + 365301.

It is an arithmetic number, because the mean of its divisors is an integer number (2712915828).

Almost surely, 2^20144342231 is an apocalyptic number.

20144342231 is a deficient number, since it is larger than the sum of its proper divisors (1558984393).

20144342231 is a wasteful number, since it uses less digits than its factorization.

20144342231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672841.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 20144342231 its reverse (13224344102), we get a palindrome (33368686333).

The spelling of 20144342231 in words is "twenty billion, one hundred forty-four million, three hundred forty-two thousand, two hundred thirty-one".