13231671989 has 2 divisors, whose sum is σ = 13231671990. Its totient is φ = 13231671988.

The previous prime is 13231671977. The next prime is 13231671997. The reversal of 13231671989 is 98917613231.

13231671989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12863415889 + 368256100 = 113417^2 + 19190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13231671989 is a prime.

It is a super-2 number, since 2×13231671989² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13231671289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6615835994 + 6615835995.

It is an arithmetic number, because the mean of its divisors is an integer number (6615835995).

Almost surely, 2^13231671989 is an apocalyptic number.

It is an amenable number.

13231671989 is a deficient number, since it is larger than the sum of its proper divisors (1).

13231671989 is an equidigital number, since it uses as much as digits as its factorization.

13231671989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 50.

The spelling of 13231671989 in words is "thirteen billion, two hundred thirty-one million, six hundred seventy-one thousand, nine hundred eighty-nine".