1303987 has 2 divisors, whose sum is σ = 1303988. Its totient is φ = 1303986.

The previous prime is 1303979. The next prime is 1304003. The reversal of 1303987 is 7893031.

It is a weak prime.

It is an emirp because it is prime and its reverse (7893031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1303987 - 2³ = 1303979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1303787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651993 + 651994.

It is an arithmetic number, because the mean of its divisors is an integer number (651994).

2^1303987 is an apocalyptic number.

1303987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1303987 is an equidigital number, since it uses as much as digits as its factorization.

1303987 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1303987 is about 1141.9225017487. The cubic root of 1303987 is about 109.2507483711.

The spelling of 1303987 in words is "one million, three hundred three thousand, nine hundred eighty-seven".