104431011321 has 24 divisors (see below), whose sum is σ = 174434219904. Its totient is φ = 55084488480.

The previous prime is 104431011283. The next prime is 104431011359. The reversal of 104431011321 is 123110134401.

It is an interprime number because it is at equal distance from previous prime (104431011283) and next prime (104431011359).

It is not a de Polignac number, because 104431011321 - 2⁹ = 104431010809 is a prime.

It is a super-2 number, since 2×104431011321² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (104431011371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27321745 + ... + 27325566.

It is an arithmetic number, because the mean of its divisors is an integer number (7268092496).

Almost surely, 2^104431011321 is an apocalyptic number.

It is an amenable number.

104431011321 is a deficient number, since it is larger than the sum of its proper divisors (70003208583).

104431011321 is a wasteful number, since it uses less digits than its factorization.

104431011321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54647341 (or 54647334 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 104431011321 its reverse (123110134401), we get a palindrome (227541145722).

The spelling of 104431011321 in words is "one hundred four billion, four hundred thirty-one million, eleven thousand, three hundred twenty-one".