203430034 has 4 divisors (see below), whose sum is σ = 305145054. Its totient is φ = 101715016.

The previous prime is 203430013. The next prime is 203430043. The reversal of 203430034 is 430034302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 125372809 + 78057225 = 11197^2 + 8835^2 .

It is a junction number, because it is equal to n+sod(n) for n = 203429993 and 203430020.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50857507 + ... + 50857510.

Almost surely, 2^203430034 is an apocalyptic number.

203430034 is a deficient number, since it is larger than the sum of its proper divisors (101715020).

203430034 is a wasteful number, since it uses less digits than its factorization.

203430034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101715019.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 203430034 is about 14262.8900998360. The cubic root of 203430034 is about 588.1277758473.

Adding to 203430034 its reverse (430034302), we get a palindrome (633464336).

The spelling of 203430034 in words is "two hundred three million, four hundred thirty thousand, thirty-four".