1287337117 has 16 divisors (see below), whose sum is σ = 1469197440. Its totient is φ = 1116544000.

The previous prime is 1287337099. The next prime is 1287337127. The reversal of 1287337117 is 7117337821.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1287337117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1287337117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287337127) 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 in 15 ways as a sum of consecutive naturals, for example, 95109 + ... + 107797.

It is an arithmetic number, because the mean of its divisors is an integer number (91824840).

Almost surely, 2^1287337117 is an apocalyptic number.

It is an amenable number.

1287337117 is a deficient number, since it is larger than the sum of its proper divisors (181860323).

1287337117 is a wasteful number, since it uses less digits than its factorization.

1287337117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13124.

The product of its digits is 49392, while the sum is 40.

The square root of 1287337117 is about 35879.4804449563. The cubic root of 1287337117 is about 1087.8376785869.

The spelling of 1287337117 in words is "one billion, two hundred eighty-seven million, three hundred thirty-seven thousand, one hundred seventeen".