203130106 has 4 divisors (see below), whose sum is σ = 304695162. Its totient is φ = 101565052.

The previous prime is 203130101. The next prime is 203130107. The reversal of 203130106 is 601031302.

203130106 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 147403881 + 55726225 = 12141^2 + 7465^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 203130106.

It is not an unprimeable number, because it can be changed into a prime (203130101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50782525 + ... + 50782528.

Almost surely, 2^203130106 is an apocalyptic number.

203130106 is a deficient number, since it is larger than the sum of its proper divisors (101565056).

203130106 is a wasteful number, since it uses less digits than its factorization.

203130106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101565055.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 203130106 is about 14252.3719429434. The cubic root of 203130106 is about 587.8385973925.

Adding to 203130106 its reverse (601031302), we get a palindrome (804161408).

The spelling of 203130106 in words is "two hundred three million, one hundred thirty thousand, one hundred six".