204123234133 has 16 divisors (see below), whose sum is σ = 251321297920. Its totient is φ = 161444503296.

The previous prime is 204123234121. The next prime is 204123234143. The reversal of 204123234133 is 331432321402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 204123234133 - 2⁹ = 204123233621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204123234113) 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, 165060 + ... + 659917.

It is an arithmetic number, because the mean of its divisors is an integer number (15707581120).

Almost surely, 2^204123234133 is an apocalyptic number.

It is an amenable number.

204123234133 is a deficient number, since it is larger than the sum of its proper divisors (47198063787).

204123234133 is a wasteful number, since it uses less digits than its factorization.

204123234133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827716.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 204123234133 its reverse (331432321402), we get a palindrome (535555555535).

The spelling of 204123234133 in words is "two hundred four billion, one hundred twenty-three million, two hundred thirty-four thousand, one hundred thirty-three".