104431519 has 4 divisors (see below), whose sum is σ = 104463720. Its totient is φ = 104399320.

The previous prime is 104431507. The next prime is 104431531. The reversal of 104431519 is 915134401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 915134401 = 89 ⋅10282409.

It is an interprime number because it is at equal distance from previous prime (104431507) and next prime (104431531).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104431519 is a prime.

It is a super-2 number, since 2×104431519² = 21811884321294722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104437519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10612 + ... + 17929.

It is an arithmetic number, because the mean of its divisors is an integer number (26115930).

Almost surely, 2^104431519 is an apocalyptic number.

104431519 is a deficient number, since it is larger than the sum of its proper divisors (32201).

104431519 is an equidigital number, since it uses as much as digits as its factorization.

104431519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32200.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 104431519 is about 10219.1740860013. The cubic root of 104431519 is about 470.9164538835.

The spelling of 104431519 in words is "one hundred four million, four hundred thirty-one thousand, five hundred nineteen".