4131243665 has 8 divisors (see below), whose sum is σ = 4958006208. Its totient is φ = 3304652400.

The previous prime is 4131243643. The next prime is 4131243689. The reversal of 4131243665 is 5663421314.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4131243665 - 2⁸ = 4131243409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18140 + ... + 92690.

It is an arithmetic number, because the mean of its divisors is an integer number (619750776).

Almost surely, 2^4131243665 is an apocalyptic number.

It is an amenable number.

4131243665 is a deficient number, since it is larger than the sum of its proper divisors (826762543).

4131243665 is a wasteful number, since it uses less digits than its factorization.

4131243665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85639.

The product of its digits is 51840, while the sum is 35.

The square root of 4131243665 is about 64274.7513803048. The cubic root of 4131243665 is about 1604.5759195047.

Adding to 4131243665 its reverse (5663421314), we get a palindrome (9794664979).

The spelling of 4131243665 in words is "four billion, one hundred thirty-one million, two hundred forty-three thousand, six hundred sixty-five".