231383505383137 has 2 divisors, whose sum is σ = 231383505383138. Its totient is φ = 231383505383136.

The previous prime is 231383505383039. The next prime is 231383505383141. The reversal of 231383505383137 is 731383505383132.

231383505383137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213846138063441 + 17537367319696 = 14623479^2 + 4187764^2 .

It is a cyclic number.

It is not a de Polignac number, because 231383505383137 - 2³⁵ = 231349145644769 is a prime.

It is not a weakly prime, because it can be changed into another prime (231383505383197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115691752691568 + 115691752691569.

It is an arithmetic number, because the mean of its divisors is an integer number (115691752691569).

Almost surely, 2^{231383505383137} is an apocalyptic number.

It is an amenable number.

231383505383137 is a deficient number, since it is larger than the sum of its proper divisors (1).

231383505383137 is an equidigital number, since it uses as much as digits as its factorization.

231383505383137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16329600, while the sum is 55.

The spelling of 231383505383137 in words is "two hundred thirty-one trillion, three hundred eighty-three billion, five hundred five million, three hundred eighty-three thousand, one hundred thirty-seven".