243120244031 has 16 divisors (see below), whose sum is σ = 283825881600. Its totient is φ = 203942486880.

The previous prime is 243120244021. The next prime is 243120244063. The reversal of 243120244031 is 130442021342.

243120244031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243120244031 is a prime.

It is a super-2 number, since 2×243120244031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243120244021) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1345601 + ... + 1515546.

It is an arithmetic number, because the mean of its divisors is an integer number (17739117600).

Almost surely, 2^243120244031 is an apocalyptic number.

243120244031 is a deficient number, since it is larger than the sum of its proper divisors (40705637569).

243120244031 is a wasteful number, since it uses less digits than its factorization.

243120244031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2861414.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 243120244031 its reverse (130442021342), we get a palindrome (373562265373).

The spelling of 243120244031 in words is "two hundred forty-three billion, one hundred twenty million, two hundred forty-four thousand, thirty-one".