203123140 has 48 divisors (see below), whose sum is σ = 492718464. Its totient is φ = 69516800.

The previous prime is 203123131. The next prime is 203123147. The reversal of 203123140 is 41321302.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (203123147) 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 15 ways as a sum of consecutive naturals, for example, 23416 + ... + 30895.

It is an arithmetic number, because the mean of its divisors is an integer number (10264968).

Almost surely, 2^203123140 is an apocalyptic number.

203123140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203123140 is an abundant number, since it is smaller than the sum of its proper divisors (289595324).

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

203123140 is a wasteful number, since it uses less digits than its factorization.

203123140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54348 (or 54346 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 203123140 is about 14252.1275604732. The cubic root of 203123140 is about 587.8318776755.

Adding to 203123140 its reverse (41321302), we get a palindrome (244444442).

The spelling of 203123140 in words is "two hundred three million, one hundred twenty-three thousand, one hundred forty".