243004103442131 has 4 divisors (see below), whose sum is σ = 255793793097000. Its totient is φ = 230214413787264.

The previous prime is 243004103442091. The next prime is 243004103442173. The reversal of 243004103442131 is 131244301400342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243004103442131 - 2³⁴ = 242986923572947 is a prime.

It is a super-2 number, since 2×243004103442131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243004103442631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6394844827406 + ... + 6394844827443.

It is an arithmetic number, because the mean of its divisors is an integer number (63948448274250).

Almost surely, 2^{243004103442131} is an apocalyptic number.

243004103442131 is a deficient number, since it is larger than the sum of its proper divisors (12789689654869).

243004103442131 is a wasteful number, since it uses less digits than its factorization.

243004103442131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12789689654868.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 243004103442131 its reverse (131244301400342), we get a palindrome (374248404842473).

The spelling of 243004103442131 in words is "two hundred forty-three trillion, four billion, one hundred three million, four hundred forty-two thousand, one hundred thirty-one".