203344242523 has 4 divisors (see below), whose sum is σ = 205143749208. Its totient is φ = 201544735840.

The previous prime is 203344242503. The next prime is 203344242547. The reversal of 203344242523 is 325242443302.

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

It is a cyclic number.

It is not a de Polignac number, because 203344242523 - 2⁹ = 203344242011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203344242503) 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, 899753173 + ... + 899753398.

It is an arithmetic number, because the mean of its divisors is an integer number (51285937302).

Almost surely, 2^203344242523 is an apocalyptic number.

203344242523 is a deficient number, since it is larger than the sum of its proper divisors (1799506685).

203344242523 is a wasteful number, since it uses less digits than its factorization.

203344242523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799506684.

The product of its (nonzero) digits is 138240, while the sum is 34.

Adding to 203344242523 its reverse (325242443302), we get a palindrome (528586685825).

The spelling of 203344242523 in words is "two hundred three billion, three hundred forty-four million, two hundred forty-two thousand, five hundred twenty-three".