1304323987 has 2 divisors, whose sum is σ = 1304323988. Its totient is φ = 1304323986.

The previous prime is 1304323973. The next prime is 1304323991. The reversal of 1304323987 is 7893234031.

It is a strong prime.

It is an emirp because it is prime and its reverse (7893234031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1304323987 - 2²³ = 1295935379 is a prime.

It is a super-2 number, since 2×1304323987² = 3402522126127152338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1304323927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652161993 + 652161994.

It is an arithmetic number, because the mean of its divisors is an integer number (652161994).

Almost surely, 2^1304323987 is an apocalyptic number.

1304323987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1304323987 is an equidigital number, since it uses as much as digits as its factorization.

1304323987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 1304323987 is about 36115.4258870084. The cubic root of 1304323987 is about 1092.6015871826.

The spelling of 1304323987 in words is "one billion, three hundred four million, three hundred twenty-three thousand, nine hundred eighty-seven".