104405031 has 10 divisors (see below), whose sum is σ = 155963192. Its totient is φ = 69603300.

The previous prime is 104405029. The next prime is 104405039. The reversal of 104405031 is 130504401.

It is a happy number.

It is not a de Polignac number, because 104405031 - 2¹ = 104405029 is a prime.

It is a super-2 number, since 2×104405031² = 21800820996221922, 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 = 104404995 and 104405013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104405039) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 644395 + ... + 644556.

Almost surely, 2^104405031 is an apocalyptic number.

104405031 is a deficient number, since it is larger than the sum of its proper divisors (51558161).

104405031 is an equidigital number, since it uses as much as digits as its factorization.

104405031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288963 (or 1288954 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 104405031 is about 10217.8780086670. The cubic root of 104405031 is about 470.8766361161.

Adding to 104405031 its reverse (130504401), we get a palindrome (234909432).

The spelling of 104405031 in words is "one hundred four million, four hundred five thousand, thirty-one".