204903131 has 2 divisors, whose sum is σ = 204903132. Its totient is φ = 204903130.

The previous prime is 204903119. The next prime is 204903173. The reversal of 204903131 is 131309402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204903131 - 2¹⁰ = 204902107 is a prime.

It is a super-2 number, since 2×204903131² = 83970586187206322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 204903097 and 204903106.

It is not a weakly prime, because it can be changed into another prime (204903191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102451565 + 102451566.

It is an arithmetic number, because the mean of its divisors is an integer number (102451566).

Almost surely, 2^204903131 is an apocalyptic number.

204903131 is a deficient number, since it is larger than the sum of its proper divisors (1).

204903131 is an equidigital number, since it uses as much as digits as its factorization.

204903131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 204903131 is about 14314.4378513444. The cubic root of 204903131 is about 589.5439653281.

The spelling of 204903131 in words is "two hundred four million, nine hundred three thousand, one hundred thirty-one".