131113000121 has 2 divisors, whose sum is σ = 131113000122. Its totient is φ = 131113000120.

The previous prime is 131113000099. The next prime is 131113000159. The reversal of 131113000121 is 121000311131.

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., 87400644496 + 43712355625 = 295636^2 + 209075^2 .

It is a cyclic number.

It is not a de Polignac number, because 131113000121 - 2¹⁴ = 131112983737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131113000096 and 131113000105.

It is not a weakly prime, because it can be changed into another prime (131113000321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65556500060 + 65556500061.

It is an arithmetic number, because the mean of its divisors is an integer number (65556500061).

Almost surely, 2^131113000121 is an apocalyptic number.

It is an amenable number.

131113000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

131113000121 is an equidigital number, since it uses as much as digits as its factorization.

131113000121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 131113000121 its reverse (121000311131), we get a palindrome (252113311252).

The spelling of 131113000121 in words is "one hundred thirty-one billion, one hundred thirteen million, one hundred twenty-one", and thus it is an aban number.