204511431262123 has 16 divisors (see below), whose sum is σ = 206573852846592. Its totient is φ = 202456836036000.

The previous prime is 204511431262121. The next prime is 204511431262153. The reversal of 204511431262123 is 321262134115402.

It is a cyclic number.

It is not a de Polignac number, because 204511431262123 - 2¹ = 204511431262121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204511431262121) 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, 230431888 + ... + 231317698.

It is an arithmetic number, because the mean of its divisors is an integer number (12910865802912).

Almost surely, 2^{204511431262123} is an apocalyptic number.

204511431262123 is a deficient number, since it is larger than the sum of its proper divisors (2062421584469).

204511431262123 is a wasteful number, since it uses less digits than its factorization.

204511431262123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890226.

The product of its (nonzero) digits is 69120, while the sum is 37.

Adding to 204511431262123 its reverse (321262134115402), we get a palindrome (525773565377525).

The spelling of 204511431262123 in words is "two hundred four trillion, five hundred eleven billion, four hundred thirty-one million, two hundred sixty-two thousand, one hundred twenty-three".