987313 has 2 divisors, whose sum is σ = 987314. Its totient is φ = 987312.

The previous prime is 987299. The next prime is 987353. The reversal of 987313 is 313789.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 984064 + 3249 = 992^2 + 57^2 .

It is a cyclic number.

It is not a de Polignac number, because 987313 - 2⁹ = 986801 is a prime.

It is not a weakly prime, because it can be changed into another prime (987353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493656 + 493657.

It is an arithmetic number, because the mean of its divisors is an integer number (493657).

2⁹⁸⁷³¹³ is an apocalyptic number.

It is an amenable number.

987313 is a deficient number, since it is larger than the sum of its proper divisors (1).

987313 is an equidigital number, since it uses as much as digits as its factorization.

987313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 31.

The square root of 987313 is about 993.6362513516. The cubic root of 987313 is about 99.5752988427.

The spelling of 987313 in words is "nine hundred eighty-seven thousand, three hundred thirteen".