104421431 has 4 divisors (see below), whose sum is σ = 108022200. Its totient is φ = 100820664.

The previous prime is 104421389. The next prime is 104421479. The reversal of 104421431 is 134124401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134124401 = 19 ⋅7059179.

It is a cyclic number.

It is not a de Polignac number, because 104421431 - 2⁶ = 104421367 is a prime.

It is a super-2 number, since 2×104421431² = 21807670504175522, 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 (104421491) 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, 1800341 + ... + 1800398.

It is an arithmetic number, because the mean of its divisors is an integer number (27005550).

Almost surely, 2^104421431 is an apocalyptic number.

104421431 is a deficient number, since it is larger than the sum of its proper divisors (3600769).

104421431 is an equidigital number, since it uses as much as digits as its factorization.

104421431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3600768.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 104421431 is about 10218.6804921183. The cubic root of 104421431 is about 470.9012900128.

Adding to 104421431 its reverse (134124401), we get a palindrome (238545832).

The spelling of 104421431 in words is "one hundred four million, four hundred twenty-one thousand, four hundred thirty-one".