243402430345 has 4 divisors (see below), whose sum is σ = 292082916420. Its totient is φ = 194721944272.

The previous prime is 243402430343. The next prime is 243402430367. The reversal of 243402430345 is 543034204342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 189563581321 + 53838849024 = 435389^2 + 232032^2 .

It is a cyclic number.

It is not a de Polignac number, because 243402430345 - 2¹ = 243402430343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243402430345.

It is not an unprimeable number, because it can be changed into a prime (243402430343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24340243030 + ... + 24340243039.

It is an arithmetic number, because the mean of its divisors is an integer number (73020729105).

Almost surely, 2^243402430345 is an apocalyptic number.

It is an amenable number.

243402430345 is a deficient number, since it is larger than the sum of its proper divisors (48680486075).

243402430345 is an equidigital number, since it uses as much as digits as its factorization.

243402430345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48680486074.

The product of its (nonzero) digits is 138240, while the sum is 34.

Adding to 243402430345 its reverse (543034204342), we get a palindrome (786436634687).

The spelling of 243402430345 in words is "two hundred forty-three billion, four hundred two million, four hundred thirty thousand, three hundred forty-five".