134531321887 has 2 divisors, whose sum is σ = 134531321888. Its totient is φ = 134531321886.

The previous prime is 134531321863. The next prime is 134531321963. The reversal of 134531321887 is 788123135431.

It is a weak prime.

It is an emirp because it is prime and its reverse (788123135431) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134531321887 is a prime.

It is a super-3 number, since 3×134531321887³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134531351887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67265660943 + 67265660944.

It is an arithmetic number, because the mean of its divisors is an integer number (67265660944).

Almost surely, 2^134531321887 is an apocalyptic number.

134531321887 is a deficient number, since it is larger than the sum of its proper divisors (1).

134531321887 is an equidigital number, since it uses as much as digits as its factorization.

134531321887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 46.

The spelling of 134531321887 in words is "one hundred thirty-four billion, five hundred thirty-one million, three hundred twenty-one thousand, eight hundred eighty-seven".