203123130 has 48 divisors (see below), whose sum is σ = 567090720. Its totient is φ = 46427808.

The previous prime is 203123117. The next prime is 203123131. The reversal of 203123130 is 31321302.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (203123131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67620 + ... + 70559.

It is an arithmetic number, because the mean of its divisors is an integer number (11814390).

Almost surely, 2^203123130 is an apocalyptic number.

203123130 is an abundant number, since it is smaller than the sum of its proper divisors (363967590).

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

203123130 is a wasteful number, since it uses less digits than its factorization.

203123130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138203 (or 138196 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 203123130 is about 14252.1272096484. The cubic root of 203123130 is about 587.8318680289.

Adding to 203123130 its reverse (31321302), we get a palindrome (234444432).

The spelling of 203123130 in words is "two hundred three million, one hundred twenty-three thousand, one hundred thirty".