104430131521 has 16 divisors (see below), whose sum is σ = 112029350400. Its totient is φ = 96993980928.

The previous prime is 104430131513. The next prime is 104430131527. The reversal of 104430131521 is 125131034401.

It is a cyclic number.

It is not a de Polignac number, because 104430131521 - 2³ = 104430131513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104430131527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2786916 + ... + 2824138.

It is an arithmetic number, because the mean of its divisors is an integer number (7001834400).

Almost surely, 2^104430131521 is an apocalyptic number.

It is an amenable number.

104430131521 is a deficient number, since it is larger than the sum of its proper divisors (7599218879).

104430131521 is a wasteful number, since it uses less digits than its factorization.

104430131521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39408.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 104430131521 its reverse (125131034401), we get a palindrome (229561165922).

The spelling of 104430131521 in words is "one hundred four billion, four hundred thirty million, one hundred thirty-one thousand, five hundred twenty-one".