104809131 has 24 divisors (see below), whose sum is σ = 183197664. Its totient is φ = 56367360.

The previous prime is 104809129. The next prime is 104809139. The reversal of 104809131 is 131908401.

It is not a de Polignac number, because 104809131 - 2¹ = 104809129 is a prime.

It is a super-2 number, since 2×104809131² = 21969907881950322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 104809095 and 104809104.

It is not an unprimeable number, because it can be changed into a prime (104809139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47860 + ... + 50001.

It is an arithmetic number, because the mean of its divisors is an integer number (7633236).

Almost surely, 2^104809131 is an apocalyptic number.

104809131 is a deficient number, since it is larger than the sum of its proper divisors (78388533).

104809131 is a wasteful number, since it uses less digits than its factorization.

104809131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97891 (or 97888 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 104809131 is about 10237.6330760582. The cubic root of 104809131 is about 471.4833638400.

The spelling of 104809131 in words is "one hundred four million, eight hundred nine thousand, one hundred thirty-one".