203980105 has 32 divisors (see below), whose sum is σ = 297480960. Its totient is φ = 131155200.

The previous prime is 203980103. The next prime is 203980109. The reversal of 203980105 is 501089302.

It is not a de Polignac number, because 203980105 - 2¹ = 203980103 is a prime.

It is a super-2 number, since 2×203980105² = 83215766471622050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (203980103) 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 in 31 ways as a sum of consecutive naturals, for example, 65647 + ... + 68683.

It is an arithmetic number, because the mean of its divisors is an integer number (9296280).

Almost surely, 2^203980105 is an apocalyptic number.

It is an amenable number.

203980105 is a deficient number, since it is larger than the sum of its proper divisors (93500855).

203980105 is a wasteful number, since it uses less digits than its factorization.

203980105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3169.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 203980105 is about 14282.1603757975. The cubic root of 203980105 is about 588.6573942695.

The spelling of 203980105 in words is "two hundred three million, nine hundred eighty thousand, one hundred five".