203480987 has 4 divisors (see below), whose sum is σ = 204131400. Its totient is φ = 202830576.

The previous prime is 203480971. The next prime is 203480999. The reversal of 203480987 is 789084302.

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 203480987 - 2⁴ = 203480971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203480917) 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, 324737 + ... + 325362.

It is an arithmetic number, because the mean of its divisors is an integer number (51032850).

Almost surely, 2^203480987 is an apocalyptic number.

203480987 is a deficient number, since it is larger than the sum of its proper divisors (650413).

203480987 is an equidigital number, since it uses as much as digits as its factorization.

203480987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650412.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 203480987 is about 14264.6761968157. The cubic root of 203480987 is about 588.1768744201.

The spelling of 203480987 in words is "two hundred three million, four hundred eighty thousand, nine hundred eighty-seven".