20423101013 has 16 divisors (see below), whose sum is σ = 23601414144. Its totient is φ = 17310872880.

The previous prime is 20423101003. The next prime is 20423101019. The reversal of 20423101013 is 31010132402.

It is not a de Polignac number, because 20423101013 - 2⁶ = 20423100949 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20423100982 and 20423101000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20423101019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235508 + ... + 310338.

It is an arithmetic number, because the mean of its divisors is an integer number (1475088384).

Almost surely, 2^20423101013 is an apocalyptic number.

It is an amenable number.

20423101013 is a deficient number, since it is larger than the sum of its proper divisors (3178313131).

20423101013 is a wasteful number, since it uses less digits than its factorization.

20423101013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75272.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20423101013 its reverse (31010132402), we get a palindrome (51433233415).

The spelling of 20423101013 in words is "twenty billion, four hundred twenty-three million, one hundred one thousand, thirteen".