243115322040 has 48 divisors (see below), whose sum is σ = 790124797800. Its totient is φ = 64830752448.

The previous prime is 243115322017. The next prime is 243115322053. The reversal of 243115322040 is 40223511342.

243115322040 is a `hidden beast` number, since 2 + 431 + 1 + 5 + 3 + 220 + 4 + 0 = 666.

It is a super-2 number, since 2×243115322040² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243115321995 and 243115322013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 337659810 + ... + 337660529.

Almost surely, 2^243115322040 is an apocalyptic number.

243115322040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243115322040 is an abundant number, since it is smaller than the sum of its proper divisors (547009475760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243115322040 is a wasteful number, since it uses less digits than its factorization.

243115322040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675320356 (or 675320349 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 243115322040 its reverse (40223511342), we get a palindrome (283338833382).

The spelling of 243115322040 in words is "two hundred forty-three billion, one hundred fifteen million, three hundred twenty-two thousand, forty".