243204001131040 has 24 divisors (see below), whose sum is σ = 574569452672460. Its totient is φ = 97281600452352.

The previous prime is 243204001131019. The next prime is 243204001131067. The reversal of 243204001131040 is 40131100402342.

It can be written as a sum of positive squares in 2 ways, for example, as 235453189226256 + 7750811904784 = 15344484^2 + 2784028^2 .

It is a super-2 number, since 2×243204001131040² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243204001130996 and 243204001131014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 760012503375 + ... + 760012503694.

Almost surely, 2^{243204001131040} is an apocalyptic number.

243204001131040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243204001131040 is an abundant number, since it is smaller than the sum of its proper divisors (331365451541420).

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

243204001131040 is a wasteful number, since it uses less digits than its factorization.

243204001131040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520025007084 (or 1520025007076 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 243204001131040 its reverse (40131100402342), we get a palindrome (283335101533382).

The spelling of 243204001131040 in words is "two hundred forty-three trillion, two hundred four billion, one million, one hundred thirty-one thousand, forty".