43104431 has 2 divisors, whose sum is σ = 43104432. Its totient is φ = 43104430.

The previous prime is 43104419. The next prime is 43104433. The reversal of 43104431 is 13440134.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43104431 - 2¹⁰ = 43103407 is a prime.

It is a super-2 number, since 2×43104431² = 3715983943667522, which contains 22 as substring.

Together with 43104433, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43104433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21552215 + 21552216.

It is an arithmetic number, because the mean of its divisors is an integer number (21552216).

Almost surely, 2^43104431 is an apocalyptic number.

43104431 is a deficient number, since it is larger than the sum of its proper divisors (1).

43104431 is an equidigital number, since it uses as much as digits as its factorization.

43104431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 43104431 is about 6565.3964846001. The cubic root of 43104431 is about 350.6231917595.

Adding to 43104431 its reverse (13440134), we get a palindrome (56544565).

The spelling of 43104431 in words is "forty-three million, one hundred four thousand, four hundred thirty-one".