12431315204555 has 32 divisors (see below), whose sum is σ = 16541691566400. Its totient is φ = 8908976788992.

The previous prime is 12431315204543. The next prime is 12431315204557. The reversal of 12431315204555 is 55540251313421.

It is a cyclic number.

It is not a de Polignac number, because 12431315204555 - 2²⁶ = 12431248095691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12431315204557) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5708345 + ... + 7579434.

It is an arithmetic number, because the mean of its divisors is an integer number (516927861450).

Almost surely, 2^{12431315204555} is an apocalyptic number.

12431315204555 is a deficient number, since it is larger than the sum of its proper divisors (4110376361845).

12431315204555 is a wasteful number, since it uses less digits than its factorization.

12431315204555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13288223.

The product of its (nonzero) digits is 360000, while the sum is 41.

Adding to 12431315204555 its reverse (55540251313421), we get a palindrome (67971566517976).

The spelling of 12431315204555 in words is "twelve trillion, four hundred thirty-one billion, three hundred fifteen million, two hundred four thousand, five hundred fifty-five".