13135731487 has 2 divisors, whose sum is σ = 13135731488. Its totient is φ = 13135731486.

The previous prime is 13135731473. The next prime is 13135731509. The reversal of 13135731487 is 78413753131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13135731487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13135731437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6567865743 + 6567865744.

It is an arithmetic number, because the mean of its divisors is an integer number (6567865744).

Almost surely, 2^13135731487 is an apocalyptic number.

13135731487 is a deficient number, since it is larger than the sum of its proper divisors (1).

13135731487 is an equidigital number, since it uses as much as digits as its factorization.

13135731487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 43.

The spelling of 13135731487 in words is "thirteen billion, one hundred thirty-five million, seven hundred thirty-one thousand, four hundred eighty-seven".