13131230989 has 2 divisors, whose sum is σ = 13131230990. Its totient is φ = 13131230988.

The previous prime is 13131230977. The next prime is 13131231031. The reversal of 13131230989 is 98903213131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10889966025 + 2241264964 = 104355^2 + 47342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13131230989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13131230929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6565615494 + 6565615495.

It is an arithmetic number, because the mean of its divisors is an integer number (6565615495).

Almost surely, 2^13131230989 is an apocalyptic number.

It is an amenable number.

13131230989 is a deficient number, since it is larger than the sum of its proper divisors (1).

13131230989 is an equidigital number, since it uses as much as digits as its factorization.

13131230989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 40.

The spelling of 13131230989 in words is "thirteen billion, one hundred thirty-one million, two hundred thirty thousand, nine hundred eighty-nine".