243130232245 has 8 divisors (see below), whose sum is σ = 293442732216. Its totient is φ = 193379883456.

The previous prime is 243130232243. The next prime is 243130232263. The reversal of 243130232245 is 542232031342.

It can be written as a sum of positive squares in 4 ways, for example, as 42922309329 + 200207922916 = 207177^2 + 447446^2 .

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 243130232245 - 2¹ = 243130232243 is a prime.

It is a super-2 number, since 2×243130232245² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243130232243) 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, 140536842 + ... + 140538571.

It is an arithmetic number, because the mean of its divisors is an integer number (36680341527).

Almost surely, 2^243130232245 is an apocalyptic number.

It is an amenable number.

243130232245 is a deficient number, since it is larger than the sum of its proper divisors (50312499971).

243130232245 is a wasteful number, since it uses less digits than its factorization.

243130232245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281075591.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 243130232245 its reverse (542232031342), we get a palindrome (785362263587).

The spelling of 243130232245 in words is "two hundred forty-three billion, one hundred thirty million, two hundred thirty-two thousand, two hundred forty-five".