243004131513 has 32 divisors (see below), whose sum is σ = 422944260480. Its totient is φ = 135946365120.

The previous prime is 243004131497. The next prime is 243004131551. The reversal of 243004131513 is 315131400342.

It is a happy number.

243004131513 is a `hidden beast` number, since 2 + 4 + 300 + 41 + 315 + 1 + 3 = 666.

It is not a de Polignac number, because 243004131513 - 2⁴ = 243004131497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (243004131553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31465206 + ... + 31472927.

It is an arithmetic number, because the mean of its divisors is an integer number (13217008140).

Almost surely, 2^243004131513 is an apocalyptic number.

It is an amenable number.

243004131513 is a deficient number, since it is larger than the sum of its proper divisors (179940128967).

243004131513 is a wasteful number, since it uses less digits than its factorization.

243004131513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62938166 (or 62938160 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 243004131513 its reverse (315131400342), we get a palindrome (558135531855).

The spelling of 243004131513 in words is "two hundred forty-three billion, four million, one hundred thirty-one thousand, five hundred thirteen".