104487731 has 4 divisors (see below), whose sum is σ = 104559672. Its totient is φ = 104415792.

The previous prime is 104487697. The next prime is 104487737. The reversal of 104487731 is 137784401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 137784401 = 47 ⋅2931583.

It is a cyclic number.

It is not a de Polignac number, because 104487731 - 2¹⁴ = 104471347 is a prime.

It is a super-2 number, since 2×104487731² = 21835371859056722, 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 = 104487691 and 104487700.

It is not an unprimeable number, because it can be changed into a prime (104487737) 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, 33746 + ... + 36711.

It is an arithmetic number, because the mean of its divisors is an integer number (26139918).

Almost surely, 2^104487731 is an apocalyptic number.

104487731 is a deficient number, since it is larger than the sum of its proper divisors (71941).

104487731 is an equidigital number, since it uses as much as digits as its factorization.

104487731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71940.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 104487731 is about 10221.9240361098. The cubic root of 104487731 is about 471.0009315963. Note that the first 3 decimals are identical.

The spelling of 104487731 in words is "one hundred four million, four hundred eighty-seven thousand, seven hundred thirty-one".