20423113002 has 12 divisors (see below), whose sum is σ = 44250078210. Its totient is φ = 6807704328.

The previous prime is 20423113001. The next prime is 20423113019. The reversal of 20423113002 is 20031132402.

It can be written as a sum of positive squares in only one way, i.e., 10375255881 + 10047857121 = 101859^2 + 100239^2 .

It is a super-2 number, since 2×20423113002² (a number of 21 digits) contains 22 as substring.

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: 1134617389 = 20423113002 / (2 + 0 + 4 + 2 + 3 + 1 + 1 + 3 + 0 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (20423113001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 567308677 + ... + 567308712.

Almost surely, 2^20423113002 is an apocalyptic number.

20423113002 is an abundant number, since it is smaller than the sum of its proper divisors (23826965208).

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

20423113002 is a wasteful number, since it uses less digits than its factorization.

20423113002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134617397 (or 1134617394 counting only the distinct ones).

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

Adding to 20423113002 its reverse (20031132402), we get a palindrome (40454245404).

The spelling of 20423113002 in words is "twenty billion, four hundred twenty-three million, one hundred thirteen thousand, two".