20130123130237 has 2 divisors, whose sum is σ = 20130123130238. Its totient is φ = 20130123130236.

The previous prime is 20130123130217. The next prime is 20130123130261. The reversal of 20130123130237 is 73203132103102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18620355547161 + 1509767583076 = 4315131^2 + 1228726^2 .

It is a cyclic number.

It is not a de Polignac number, because 20130123130237 - 2³¹ = 20127975646589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20130123130207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065061565118 + 10065061565119.

It is an arithmetic number, because the mean of its divisors is an integer number (10065061565119).

Almost surely, 2^{20130123130237} is an apocalyptic number.

It is an amenable number.

20130123130237 is a deficient number, since it is larger than the sum of its proper divisors (1).

20130123130237 is an equidigital number, since it uses as much as digits as its factorization.

20130123130237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 28.

Adding to 20130123130237 its reverse (73203132103102), we get a palindrome (93333255233339).

The spelling of 20130123130237 in words is "twenty trillion, one hundred thirty billion, one hundred twenty-three million, one hundred thirty thousand, two hundred thirty-seven".