204231031 has 2 divisors, whose sum is σ = 204231032. Its totient is φ = 204231030.

The previous prime is 204231023. The next prime is 204231061. The reversal of 204231031 is 130132402.

It is a happy number.

204231031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204231031 - 2³ = 204231023 is a prime.

It is a super-2 number, since 2×204231031² = 83420628046645922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204230996 and 204231014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204231061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102115515 + 102115516.

It is an arithmetic number, because the mean of its divisors is an integer number (102115516).

Almost surely, 2^204231031 is an apocalyptic number.

204231031 is a deficient number, since it is larger than the sum of its proper divisors (1).

204231031 is an equidigital number, since it uses as much as digits as its factorization.

204231031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 204231031 is about 14290.9422712430. The cubic root of 204231031 is about 588.8986742029.

Adding to 204231031 its reverse (130132402), we get a palindrome (334363433).

The spelling of 204231031 in words is "two hundred four million, two hundred thirty-one thousand, thirty-one".