243115315353 has 32 divisors (see below), whose sum is σ = 366921793280. Its totient is φ = 159051237120.

The previous prime is 243115315343. The next prime is 243115315361. The reversal of 243115315353 is 353513511342.

243115315353 is a `hidden beast` number, since 2 + 4 + 3 + 115 + 3 + 1 + 535 + 3 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-243115315353 is a prime.

It is a super-3 number, since 3×243115315353³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243115315343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 542700 + ... + 883602.

It is an arithmetic number, because the mean of its divisors is an integer number (11466306040).

Almost surely, 2^243115315353 is an apocalyptic number.

It is an amenable number.

243115315353 is a deficient number, since it is larger than the sum of its proper divisors (123806477927).

243115315353 is a wasteful number, since it uses less digits than its factorization.

243115315353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341406 (or 341400 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

Adding to 243115315353 its reverse (353513511342), we get a palindrome (596628826695).

The spelling of 243115315353 in words is "two hundred forty-three billion, one hundred fifteen million, three hundred fifteen thousand, three hundred fifty-three".