1231310141 has 2 divisors, whose sum is σ = 1231310142. Its totient is φ = 1231310140.

The previous prime is 1231310081. The next prime is 1231310149. The reversal of 1231310141 is 1410131321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1193426116 + 37884025 = 34546^2 + 6155^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231310141 - 2³⁰ = 157568317 is a prime.

It is a super-2 number, since 2×1231310141² = 3032249326658879762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231310149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615655070 + 615655071.

It is an arithmetic number, because the mean of its divisors is an integer number (615655071).

Almost surely, 2^1231310141 is an apocalyptic number.

It is an amenable number.

1231310141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231310141 is an equidigital number, since it uses as much as digits as its factorization.

1231310141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1231310141 is about 35090.0290823476. The cubic root of 1231310141 is about 1071.8215518130.

Adding to 1231310141 its reverse (1410131321), we get a palindrome (2641441462).

The spelling of 1231310141 in words is "one billion, two hundred thirty-one million, three hundred ten thousand, one hundred forty-one".