231135043141 has 2 divisors, whose sum is σ = 231135043142. Its totient is φ = 231135043140.

The previous prime is 231135043099. The next prime is 231135043177. The reversal of 231135043141 is 141340531132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227157092100 + 3977951041 = 476610^2 + 63071^2 .

It is a cyclic number.

It is not a de Polignac number, because 231135043141 - 2⁹ = 231135042629 is a prime.

It is a super-2 number, since 2×231135043141² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231135043541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115567521570 + 115567521571.

It is an arithmetic number, because the mean of its divisors is an integer number (115567521571).

Almost surely, 2^231135043141 is an apocalyptic number.

It is an amenable number.

231135043141 is a deficient number, since it is larger than the sum of its proper divisors (1).

231135043141 is an equidigital number, since it uses as much as digits as its factorization.

231135043141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 231135043141 its reverse (141340531132), we get a palindrome (372475574273).

The spelling of 231135043141 in words is "two hundred thirty-one billion, one hundred thirty-five million, forty-three thousand, one hundred forty-one".