20123002013 has 32 divisors (see below), whose sum is σ = 22174580736. Its totient is φ = 18206673408.

The previous prime is 20123001989. The next prime is 20123002027. The reversal of 20123002013 is 31020032102.

It is a happy number.

It is not a de Polignac number, because 20123002013 - 2²⁶ = 20055893149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123002033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4506620 + ... + 4511082.

It is an arithmetic number, because the mean of its divisors is an integer number (692955648).

Almost surely, 2^20123002013 is an apocalyptic number.

20123002013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20123002013 is a deficient number, since it is larger than the sum of its proper divisors (2051578723).

20123002013 is a wasteful number, since it uses less digits than its factorization.

20123002013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4673.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20123002013 its reverse (31020032102), we get a palindrome (51143034115).

The spelling of 20123002013 in words is "twenty billion, one hundred twenty-three million, two thousand, thirteen".