243130113505 has 8 divisors (see below), whose sum is σ = 291843014400. Its totient is φ = 194446172016.

The previous prime is 243130113463. The next prime is 243130113521. The reversal of 243130113505 is 505311031342.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 243130113505 - 2¹⁵ = 243130080737 is a prime.

It is a super-2 number, since 2×243130113505² (a number of 24 digits) contains 22 as substring.

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, 7221375 + ... + 7254964.

It is an arithmetic number, because the mean of its divisors is an integer number (36480376800).

Almost surely, 2^243130113505 is an apocalyptic number.

It is an amenable number.

243130113505 is a deficient number, since it is larger than the sum of its proper divisors (48712900895).

243130113505 is a wasteful number, since it uses less digits than its factorization.

243130113505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14479703.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 243130113505 its reverse (505311031342), we get a palindrome (748441144847).

The spelling of 243130113505 in words is "two hundred forty-three billion, one hundred thirty million, one hundred thirteen thousand, five hundred five".