203434023 has 16 divisors (see below), whose sum is σ = 292737536. Its totient is φ = 124921440.

The previous prime is 203433983. The next prime is 203434027. The reversal of 203434023 is 320434302.

It is not a de Polignac number, because 203434023 - 2¹² = 203429927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203434027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13638 + ... + 24348.

It is an arithmetic number, because the mean of its divisors is an integer number (18296096).

Almost surely, 2^203434023 is an apocalyptic number.

203434023 is a deficient number, since it is larger than the sum of its proper divisors (89303513).

203434023 is a wasteful number, since it uses less digits than its factorization.

203434023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11214.

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 203434023 is about 14263.0299375694. The cubic root of 203434023 is about 588.1316199640.

Adding to 203434023 its reverse (320434302), we get a palindrome (523868325).

The spelling of 203434023 in words is "two hundred three million, four hundred thirty-four thousand, twenty-three".