1230304987 has 4 divisors (see below), whose sum is σ = 1248667816. Its totient is φ = 1211942160.

The previous prime is 1230304981. The next prime is 1230304997. The reversal of 1230304987 is 7894030321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1230304987 - 2²⁷ = 1096087259 is a prime.

It is a super-2 number, since 2×1230304987² = 3027300722074140338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230304981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9181314 + ... + 9181447.

It is an arithmetic number, because the mean of its divisors is an integer number (312166954).

Almost surely, 2^1230304987 is an apocalyptic number.

1230304987 is a deficient number, since it is larger than the sum of its proper divisors (18362829).

1230304987 is an equidigital number, since it uses as much as digits as its factorization.

1230304987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18362828.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 1230304987 is about 35075.7036565199. The cubic root of 1230304987 is about 1071.5298194614.

The spelling of 1230304987 in words is "one billion, two hundred thirty million, three hundred four thousand, nine hundred eighty-seven".