203801130 has 128 divisors (see below), whose sum is σ = 604477440. Its totient is φ = 48522240.

The previous prime is 203801111. The next prime is 203801153. The reversal of 203801130 is 31108302.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 107874 + ... + 109746.

It is an arithmetic number, because the mean of its divisors is an integer number (4722480).

Almost surely, 2^203801130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203801130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302238720).

203801130 is an abundant number, since it is smaller than the sum of its proper divisors (400676310).

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

203801130 is a wasteful number, since it uses less digits than its factorization.

203801130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933 (or 1927 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 203801130 is about 14275.8933170573. The cubic root of 203801130 is about 588.4851784783.

Adding to 203801130 its reverse (31108302), we get a palindrome (234909432).

The spelling of 203801130 in words is "two hundred three million, eight hundred one thousand, one hundred thirty".