243104310505 has 16 divisors (see below), whose sum is σ = 333471014784. Its totient is φ = 166664689920.

The previous prime is 243104310497. The next prime is 243104310521. The reversal of 243104310505 is 505013401342.

It is not a de Polignac number, because 243104310505 - 2³ = 243104310497 is a prime.

It is a super-2 number, since 2×243104310505² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 570016 + ... + 900625.

It is an arithmetic number, because the mean of its divisors is an integer number (20841938424).

Almost surely, 2^243104310505 is an apocalyptic number.

It is an amenable number.

243104310505 is a deficient number, since it is larger than the sum of its proper divisors (90366704279).

243104310505 is a wasteful number, since it uses less digits than its factorization.

243104310505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475376.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 243104310505 its reverse (505013401342), we get a palindrome (748117711847).

The spelling of 243104310505 in words is "two hundred forty-three billion, one hundred four million, three hundred ten thousand, five hundred five".