1231144141 has 2 divisors, whose sum is σ = 1231144142. Its totient is φ = 1231144140.

The previous prime is 1231144129. The next prime is 1231144147. The reversal of 1231144141 is 1414411321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 813105225 + 418038916 = 28515^2 + 20446^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231144141 - 2⁹ = 1231143629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231144147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615572070 + 615572071.

It is an arithmetic number, because the mean of its divisors is an integer number (615572071).

Almost surely, 2^1231144141 is an apocalyptic number.

It is an amenable number.

1231144141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231144141 is an equidigital number, since it uses as much as digits as its factorization.

1231144141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384, while the sum is 22.

The square root of 1231144141 is about 35087.6636583287. The cubic root of 1231144141 is about 1071.7733835063.

Adding to 1231144141 its reverse (1414411321), we get a palindrome (2645555462).

The spelling of 1231144141 in words is "one billion, two hundred thirty-one million, one hundred forty-four thousand, one hundred forty-one".