104131031 has 4 divisors (see below), whose sum is σ = 104464032. Its totient is φ = 103798032.

The previous prime is 104131007. The next prime is 104131067. The reversal of 104131031 is 130131401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130131401 = 23 ⋅5657887.

It is a cyclic number.

It is not a de Polignac number, because 104131031 - 2¹⁰ = 104130007 is a prime.

It is a super-2 number, since 2×104131031² = 21686543234245922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 104130997 and 104131015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104131081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166031 + ... + 166656.

It is an arithmetic number, because the mean of its divisors is an integer number (26116008).

Almost surely, 2^104131031 is an apocalyptic number.

104131031 is a deficient number, since it is larger than the sum of its proper divisors (333001).

104131031 is an equidigital number, since it uses as much as digits as its factorization.

104131031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333000.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 104131031 is about 10204.4613282623. The cubic root of 104131031 is about 470.4643532068.

Adding to 104131031 its reverse (130131401), we get a palindrome (234262432).

The spelling of 104131031 in words is "one hundred four million, one hundred thirty-one thousand, thirty-one".