20130002123 has 8 divisors (see below), whose sum is σ = 25097145600. Its totient is φ = 15685715880.

The previous prime is 20130002119. The next prime is 20130002129. The reversal of 20130002123 is 32120003102.

It is a happy number.

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 20130002123 - 2² = 20130002119 is a prime.

It is a super-3 number, since 3×20130002123³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20130002098 and 20130002107.

It is not an unprimeable number, because it can be changed into a prime (20130002129) 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, 130714223 + ... + 130714376.

It is an arithmetic number, because the mean of its divisors is an integer number (3137143200).

Almost surely, 2^20130002123 is an apocalyptic number.

20130002123 is a deficient number, since it is larger than the sum of its proper divisors (4967143477).

20130002123 is a wasteful number, since it uses less digits than its factorization.

20130002123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261428617.

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

Adding to 20130002123 its reverse (32120003102), we get a palindrome (52250005225).

The spelling of 20130002123 in words is "twenty billion, one hundred thirty million, two thousand, one hundred twenty-three".