231641178944137 has 2 divisors, whose sum is σ = 231641178944138. Its totient is φ = 231641178944136.

The previous prime is 231641178944117. The next prime is 231641178944213. The reversal of 231641178944137 is 731449871146132.

231641178944137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120577002331536 + 111064176612601 = 10980756^2 + 10538699^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231641178944137 is a prime.

It is not a weakly prime, because it can be changed into another prime (231641178944107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115820589472068 + 115820589472069.

It is an arithmetic number, because the mean of its divisors is an integer number (115820589472069).

Almost surely, 2^{231641178944137} is an apocalyptic number.

It is an amenable number.

231641178944137 is a deficient number, since it is larger than the sum of its proper divisors (1).

231641178944137 is an equidigital number, since it uses as much as digits as its factorization.

231641178944137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24385536, while the sum is 61.

The spelling of 231641178944137 in words is "two hundred thirty-one trillion, six hundred forty-one billion, one hundred seventy-eight million, nine hundred forty-four thousand, one hundred thirty-seven".