20123103013 has 8 divisors (see below), whose sum is σ = 22256738168. Its totient is φ = 18073139904.

The previous prime is 20123103001. The next prime is 20123103043. The reversal of 20123103013 is 31030132102.

It can be written as a sum of positive squares in 4 ways, for example, as 8772757569 + 11350345444 = 93663^2 + 106538^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20123103013 - 2⁹ = 20123102501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123103043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20917506 + ... + 20918467.

It is an arithmetic number, because the mean of its divisors is an integer number (2782092271).

Almost surely, 2^20123103013 is an apocalyptic number.

It is an amenable number.

20123103013 is a deficient number, since it is larger than the sum of its proper divisors (2133635155).

20123103013 is a wasteful number, since it uses less digits than its factorization.

20123103013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41836023.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20123103013 its reverse (31030132102), we get a palindrome (51153235115).

The spelling of 20123103013 in words is "twenty billion, one hundred twenty-three million, one hundred three thousand, thirteen".