13134431987 has 2 divisors, whose sum is σ = 13134431988. Its totient is φ = 13134431986.

The previous prime is 13134431941. The next prime is 13134432019. The reversal of 13134431987 is 78913443131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13134431987 - 2¹⁰ = 13134430963 is a prime.

It is a super-2 number, since 2×13134431987² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13134431917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6567215993 + 6567215994.

It is an arithmetic number, because the mean of its divisors is an integer number (6567215994).

Almost surely, 2^13134431987 is an apocalyptic number.

13134431987 is a deficient number, since it is larger than the sum of its proper divisors (1).

13134431987 is an equidigital number, since it uses as much as digits as its factorization.

13134431987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The spelling of 13134431987 in words is "thirteen billion, one hundred thirty-four million, four hundred thirty-one thousand, nine hundred eighty-seven".