1311455141 has 2 divisors, whose sum is σ = 1311455142. Its totient is φ = 1311455140.

The previous prime is 1311455113. The next prime is 1311455149. The reversal of 1311455141 is 1415541131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 932997025 + 378458116 = 30545^2 + 19454^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311455141 - 2⁶ = 1311455077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1311455141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311455149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655727570 + 655727571.

It is an arithmetic number, because the mean of its divisors is an integer number (655727571).

Almost surely, 2^1311455141 is an apocalyptic number.

It is an amenable number.

1311455141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311455141 is an equidigital number, since it uses as much as digits as its factorization.

1311455141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 26.

The square root of 1311455141 is about 36214.0185701615. The cubic root of 1311455141 is about 1094.5891694283.

Adding to 1311455141 its reverse (1415541131), we get a palindrome (2726996272).

The spelling of 1311455141 in words is "one billion, three hundred eleven million, four hundred fifty-five thousand, one hundred forty-one".