203140404 has 72 divisors (see below), whose sum is σ = 529194120. Its totient is φ = 65664000.

The previous prime is 203140403. The next prime is 203140417. The reversal of 203140404 is 404041302.

203140404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 56972304 + 146168100 = 7548^2 + 12090^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203140403) 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, 337704 + ... + 338304.

Almost surely, 2^203140404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203140404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264597060).

203140404 is an abundant number, since it is smaller than the sum of its proper divisors (326053716).

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

203140404 is a wasteful number, since it uses less digits than its factorization.

203140404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881 (or 876 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 203140404 is about 14252.7332115633. The cubic root of 203140404 is about 587.8485310252.

Adding to 203140404 its reverse (404041302), we get a palindrome (607181706).

The spelling of 203140404 in words is "two hundred three million, one hundred forty thousand, four hundred four".