204311304043431 has 32 divisors (see below), whose sum is σ = 293981301600000. Its totient is φ = 125468120095488.

The previous prime is 204311304043373. The next prime is 204311304043487. The reversal of 204311304043431 is 134340403113402.

It is not a de Polignac number, because 204311304043431 - 2⁷ = 204311304043303 is a prime.

It is a super-2 number, since 2×204311304043431² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204311304043392 and 204311304043401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204311304043531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248866140 + ... + 249685758.

It is an arithmetic number, because the mean of its divisors is an integer number (9186915675000).

Almost surely, 2^{204311304043431} is an apocalyptic number.

204311304043431 is a deficient number, since it is larger than the sum of its proper divisors (89669997556569).

204311304043431 is a wasteful number, since it uses less digits than its factorization.

204311304043431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832943.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 204311304043431 its reverse (134340403113402), we get a palindrome (338651707156833).

The spelling of 204311304043431 in words is "two hundred four trillion, three hundred eleven billion, three hundred four million, forty-three thousand, four hundred thirty-one".