203400434 has 8 divisors (see below), whose sum is σ = 321158640. Its totient is φ = 96347556.

The previous prime is 203400391. The next prime is 203400437. The reversal of 203400434 is 434004302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (203400437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2676284 + ... + 2676359.

It is an arithmetic number, because the mean of its divisors is an integer number (40144830).

Almost surely, 2^203400434 is an apocalyptic number.

203400434 is a deficient number, since it is larger than the sum of its proper divisors (117758206).

203400434 is a wasteful number, since it uses less digits than its factorization.

203400434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5352664.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 203400434 is about 14261.8524042286. The cubic root of 203400434 is about 588.0992493703.

Adding to 203400434 its reverse (434004302), we get a palindrome (637404736).

The spelling of 203400434 in words is "two hundred three million, four hundred thousand, four hundred thirty-four".