204103121030431 has 16 divisors (see below), whose sum is σ = 233295487147008. Its totient is φ = 174919451004000.

The previous prime is 204103121030363. The next prime is 204103121030441. The reversal of 204103121030431 is 134030121301402.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204103121030431 is a prime.

It is a super-2 number, since 2×204103121030431² (a number of 29 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 = 204103121030396 and 204103121030405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204103121030441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1908112156 + ... + 1908219118.

It is an arithmetic number, because the mean of its divisors is an integer number (14580967946688).

Almost surely, 2^{204103121030431} is an apocalyptic number.

204103121030431 is a deficient number, since it is larger than the sum of its proper divisors (29192366116577).

204103121030431 is a wasteful number, since it uses less digits than its factorization.

204103121030431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145062.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 204103121030431 its reverse (134030121301402), we get a palindrome (338133242331833).

The spelling of 204103121030431 in words is "two hundred four trillion, one hundred three billion, one hundred twenty-one million, thirty thousand, four hundred thirty-one".