203430004 has 6 divisors (see below), whose sum is σ = 356002514. Its totient is φ = 101715000.

The previous prime is 203429999. The next prime is 203430013. The reversal of 203430004 is 400034302.

It can be written as a sum of positive squares in only one way, i.e., 129504400 + 73925604 = 11380^2 + 8598^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 203430004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25428747 + ... + 25428754.

Almost surely, 2^203430004 is an apocalyptic number.

It is an amenable number.

203430004 is a deficient number, since it is larger than the sum of its proper divisors (152572510).

203430004 is a wasteful number, since it uses less digits than its factorization.

203430004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50857505 (or 50857503 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 203430004 is about 14262.8890481557. The cubic root of 203430004 is about 588.1277469368.

Adding to 203430004 its reverse (400034302), we get a palindrome (603464306).

The spelling of 203430004 in words is "two hundred three million, four hundred thirty thousand, four".