203430009987 has 6 divisors (see below), whose sum is σ = 293843347772. Its totient is φ = 135620006652.

The previous prime is 203430009977. The next prime is 203430010013. The reversal of 203430009987 is 789900034302.

It is a happy number.

203430009987 is a `hidden beast` number, since 203 + 430 + 0 + 0 + 9 + 9 + 8 + 7 = 666.

It is not a de Polignac number, because 203430009987 - 2⁷ = 203430009859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203430009977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11301667213 + ... + 11301667230.

Almost surely, 2^203430009987 is an apocalyptic number.

203430009987 is a deficient number, since it is larger than the sum of its proper divisors (90413337785).

203430009987 is a wasteful number, since it uses less digits than its factorization.

203430009987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22603334449 (or 22603334446 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 203430009987 in words is "two hundred three billion, four hundred thirty million, nine thousand, nine hundred eighty-seven".