123130130009 has 4 divisors (see below), whose sum is σ = 123130990080. Its totient is φ = 123129269940.

The previous prime is 123130130003. The next prime is 123130130027. The reversal of 123130130009 is 900031031321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 123130130009 - 2²⁰ = 123129081433 is a prime.

It is a super-4 number, since 4×123130130009⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123130130003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157877 + ... + 520754.

It is an arithmetic number, because the mean of its divisors is an integer number (30782747520).

Almost surely, 2^123130130009 is an apocalyptic number.

It is an amenable number.

123130130009 is a deficient number, since it is larger than the sum of its proper divisors (860071).

123130130009 is an equidigital number, since it uses as much as digits as its factorization.

123130130009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860070.

The product of its (nonzero) digits is 486, while the sum is 23.

The spelling of 123130130009 in words is "one hundred twenty-three billion, one hundred thirty million, one hundred thirty thousand, nine".