243115412131 has 2 divisors, whose sum is σ = 243115412132. Its totient is φ = 243115412130.

The previous prime is 243115412093. The next prime is 243115412167. The reversal of 243115412131 is 131214511342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243115412131 - 2⁹ = 243115411619 is a prime.

It is a super-2 number, since 2×243115412131² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243115412131.

It is not a weakly prime, because it can be changed into another prime (243115412431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121557706065 + 121557706066.

It is an arithmetic number, because the mean of its divisors is an integer number (121557706066).

Almost surely, 2^243115412131 is an apocalyptic number.

243115412131 is a deficient number, since it is larger than the sum of its proper divisors (1).

243115412131 is an equidigital number, since it uses as much as digits as its factorization.

243115412131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 28.

Adding to 243115412131 its reverse (131214511342), we get a palindrome (374329923473).

The spelling of 243115412131 in words is "two hundred forty-three billion, one hundred fifteen million, four hundred twelve thousand, one hundred thirty-one".