313108987 has 2 divisors, whose sum is σ = 313108988. Its totient is φ = 313108986.

The previous prime is 313108973. The next prime is 313109033. The reversal of 313108987 is 789801313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 313108987 - 2²³ = 304720379 is a prime.

It is not a weakly prime, because it can be changed into another prime (313108967) 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, 156554493 + 156554494.

It is an arithmetic number, because the mean of its divisors is an integer number (156554494).

Almost surely, 2^313108987 is an apocalyptic number.

313108987 is a deficient number, since it is larger than the sum of its proper divisors (1).

313108987 is an equidigital number, since it uses as much as digits as its factorization.

313108987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 313108987 is about 17694.8858996039. The cubic root of 313108987 is about 679.0449301239.

The spelling of 313108987 in words is "three hundred thirteen million, one hundred eight thousand, nine hundred eighty-seven".