204121203031 has 8 divisors (see below), whose sum is σ = 205335924480. Its totient is φ = 202906882272.

The previous prime is 204121203023. The next prime is 204121203037. The reversal of 204121203031 is 130302121402.

It is a happy number.

204121203031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 204121203031 - 2³ = 204121203023 is a prime.

It is a super-2 number, since 2×204121203031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204121203037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 954621 + ... + 1148713.

It is an arithmetic number, because the mean of its divisors is an integer number (25666990560).

Almost surely, 2^204121203031 is an apocalyptic number.

204121203031 is a deficient number, since it is larger than the sum of its proper divisors (1214721449).

204121203031 is a wasteful number, since it uses less digits than its factorization.

204121203031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200345.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 204121203031 its reverse (130302121402), we get a palindrome (334423324433).

The spelling of 204121203031 in words is "two hundred four billion, one hundred twenty-one million, two hundred three thousand, thirty-one".