431304120664521 has 32 divisors (see below), whose sum is σ = 635181331986432. Its totient is φ = 258643912726080.

The previous prime is 431304120664409. The next prime is 431304120664567. The reversal of 431304120664521 is 125466021403134.

It is not a de Polignac number, because 431304120664521 - 2¹⁰ = 431304120663497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (431304120664621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 297639055 + ... + 299084628.

It is an arithmetic number, because the mean of its divisors is an integer number (19849416624576).

Almost surely, 2^{431304120664521} is an apocalyptic number.

It is an amenable number.

431304120664521 is a deficient number, since it is larger than the sum of its proper divisors (203877211321911).

431304120664521 is a wasteful number, since it uses less digits than its factorization.

431304120664521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596724173.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 431304120664521 in words is "four hundred thirty-one trillion, three hundred four billion, one hundred twenty million, six hundred sixty-four thousand, five hundred twenty-one".