243623240947 has 8 divisors (see below), whose sum is σ = 252724328640. Its totient is φ = 234672584640.

The previous prime is 243623240911. The next prime is 243623240951. The reversal of 243623240947 is 749042326342.

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 243623240947 - 2²³ = 243614852339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243623240897 and 243623240906.

It is not an unprimeable number, because it can be changed into a prime (243623240957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37604548 + ... + 37611025.

It is an arithmetic number, because the mean of its divisors is an integer number (31590541080).

Almost surely, 2^243623240947 is an apocalyptic number.

243623240947 is a deficient number, since it is larger than the sum of its proper divisors (9101087693).

243623240947 is an equidigital number, since it uses as much as digits as its factorization.

243623240947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75215693.

The product of its (nonzero) digits is 1741824, while the sum is 46.

The spelling of 243623240947 in words is "two hundred forty-three billion, six hundred twenty-three million, two hundred forty thousand, nine hundred forty-seven".