1313143541 has 2 divisors, whose sum is σ = 1313143542. Its totient is φ = 1313143540.

The previous prime is 1313143453. The next prime is 1313143543. The reversal of 1313143541 is 1453413131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1016270641 + 296872900 = 31879^2 + 17230^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313143541 - 2¹⁴ = 1313127157 is a prime.

Together with 1313143543, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1313143541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313143543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656571770 + 656571771.

It is an arithmetic number, because the mean of its divisors is an integer number (656571771).

Almost surely, 2^1313143541 is an apocalyptic number.

It is an amenable number.

1313143541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313143541 is an equidigital number, since it uses as much as digits as its factorization.

1313143541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 1313143541 is about 36237.3224866297. The cubic root of 1313143541 is about 1095.0587017730.

Adding to 1313143541 its reverse (1453413131), we get a palindrome (2766556672).

The spelling of 1313143541 in words is "one billion, three hundred thirteen million, one hundred forty-three thousand, five hundred forty-one".