204330421031 has 32 divisors (see below), whose sum is σ = 227395338240. Its totient is φ = 182062792800.

The previous prime is 204330420997. The next prime is 204330421063. The reversal of 204330421031 is 130124033402.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204330421031 is a prime.

It is a super-2 number, since 2×204330421031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204330420988 and 204330421006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204330421831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40970120 + ... + 40975106.

It is an arithmetic number, because the mean of its divisors is an integer number (7106104320).

Almost surely, 2^204330421031 is an apocalyptic number.

204330421031 is a deficient number, since it is larger than the sum of its proper divisors (23064917209).

204330421031 is a wasteful number, since it uses less digits than its factorization.

204330421031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5475.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 204330421031 its reverse (130124033402), we get a palindrome (334454454433).

The spelling of 204330421031 in words is "two hundred four billion, three hundred thirty million, four hundred twenty-one thousand, thirty-one".