887731513 has 2 divisors, whose sum is σ = 887731514. Its totient is φ = 887731512.

The previous prime is 887731511. The next prime is 887731541. The reversal of 887731513 is 315137788.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 837986704 + 49744809 = 28948^2 + 7053^2 .

It is a cyclic number.

It is not a de Polignac number, because 887731513 - 2¹ = 887731511 is a prime.

Together with 887731511, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 887731513.

It is not a weakly prime, because it can be changed into another prime (887731511) 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, 443865756 + 443865757.

It is an arithmetic number, because the mean of its divisors is an integer number (443865757).

Almost surely, 2^887731513 is an apocalyptic number.

It is an amenable number.

887731513 is a deficient number, since it is larger than the sum of its proper divisors (1).

887731513 is an equidigital number, since it uses as much as digits as its factorization.

887731513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 43.

The square root of 887731513 is about 29794.8235940406. The cubic root of 887731513 is about 961.0822260700.

The spelling of 887731513 in words is "eight hundred eighty-seven million, seven hundred thirty-one thousand, five hundred thirteen".