20123143002 has 12 divisors (see below), whose sum is σ = 43600143210. Its totient is φ = 6707714328.

The previous prime is 20123142997. The next prime is 20123143021. The reversal of 20123143002 is 20034132102.

20123143002 is a `hidden beast` number, since 2 + 0 + 1 + 231 + 430 + 0 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19701210321 + 421932681 = 140361^2 + 20541^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1117952389 = 20123143002 / (2 + 0 + 1 + 2 + 3 + 1 + 4 + 3 + 0 + 0 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 558976177 + ... + 558976212.

Almost surely, 2^20123143002 is an apocalyptic number.

20123143002 is an abundant number, since it is smaller than the sum of its proper divisors (23477000208).

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

20123143002 is a wasteful number, since it uses less digits than its factorization.

20123143002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117952397 (or 1117952394 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20123143002 its reverse (20034132102), we get a palindrome (40157275104).

The spelling of 20123143002 in words is "twenty billion, one hundred twenty-three million, one hundred forty-three thousand, two".