243031012005 has 32 divisors (see below), whose sum is σ = 416252966400. Its totient is φ = 120713343552.

The previous prime is 243031011991. The next prime is 243031012031. The reversal of 243031012005 is 500210130342.

It is not a de Polignac number, because 243031012005 - 2¹¹ = 243031009957 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7209799 + ... + 7243428.

It is an arithmetic number, because the mean of its divisors is an integer number (13007905200).

Almost surely, 2^243031012005 is an apocalyptic number.

It is an amenable number.

243031012005 is a deficient number, since it is larger than the sum of its proper divisors (173221954395).

243031012005 is a wasteful number, since it uses less digits than its factorization.

243031012005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14453313.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 243031012005 its reverse (500210130342), we get a palindrome (743241142347).

The spelling of 243031012005 in words is "two hundred forty-three billion, thirty-one million, twelve thousand, five".