20144123223 has 32 divisors (see below), whose sum is σ = 30996725760. Its totient is φ = 11398464480.

The previous prime is 20144123177. The next prime is 20144123243. The reversal of 20144123223 is 32232144102.

It is a happy number.

It is not a de Polignac number, because 20144123223 - 2¹⁸ = 20143861079 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20144123193 and 20144123202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144123243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1310086 + ... + 1325372.

It is an arithmetic number, because the mean of its divisors is an integer number (968647680).

Almost surely, 2^20144123223 is an apocalyptic number.

20144123223 is a deficient number, since it is larger than the sum of its proper divisors (10852602537).

20144123223 is a wasteful number, since it uses less digits than its factorization.

20144123223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15907.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20144123223 its reverse (32232144102), we get a palindrome (52376267325).

The spelling of 20144123223 in words is "twenty billion, one hundred forty-four million, one hundred twenty-three thousand, two hundred twenty-three".