203130138 has 16 divisors (see below), whose sum is σ = 407143296. Its totient is φ = 67562880.

The previous prime is 203130107. The next prime is 203130139. The reversal of 203130138 is 831031302.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (203130139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33783 + ... + 39338.

It is an arithmetic number, because the mean of its divisors is an integer number (25446456).

Almost surely, 2^203130138 is an apocalyptic number.

203130138 is an abundant number, since it is smaller than the sum of its proper divisors (204013158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203130138 is a wasteful number, since it uses less digits than its factorization.

203130138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73589.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 203130138 is about 14252.3730655635. The cubic root of 203130138 is about 587.8386282608.

The spelling of 203130138 in words is "two hundred three million, one hundred thirty thousand, one hundred thirty-eight".