203130005 has 16 divisors (see below), whose sum is σ = 268095744. Its totient is φ = 146809920.

The previous prime is 203129999. The next prime is 203130029. The reversal of 203130005 is 500031302.

It is not a de Polignac number, because 203130005 - 2⁴ = 203129989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30191 + ... + 36300.

It is an arithmetic number, because the mean of its divisors is an integer number (16755984).

Almost surely, 2^203130005 is an apocalyptic number.

It is an amenable number.

203130005 is a deficient number, since it is larger than the sum of its proper divisors (64965739).

203130005 is a wasteful number, since it uses less digits than its factorization.

203130005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66556.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 203130005 is about 14252.3683996731. The cubic root of 203130005 is about 587.8384999644.

Adding to 203130005 its reverse (500031302), we get a palindrome (703161307).

The spelling of 203130005 in words is "two hundred three million, one hundred thirty thousand, five".