143311313 has 2 divisors, whose sum is σ = 143311314. Its totient is φ = 143311312.

The previous prime is 143311307. The next prime is 143311351. The reversal of 143311313 is 313113341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99062209 + 44249104 = 9953^2 + 6652^2 .

It is an emirp because it is prime and its reverse (313113341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143311313 - 2¹² = 143307217 is a prime.

It is not a weakly prime, because it can be changed into another prime (143331313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71655656 + 71655657.

It is an arithmetic number, because the mean of its divisors is an integer number (71655657).

Almost surely, 2^143311313 is an apocalyptic number.

It is an amenable number.

143311313 is a deficient number, since it is larger than the sum of its proper divisors (1).

143311313 is an equidigital number, since it uses as much as digits as its factorization.

143311313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324, while the sum is 20.

The square root of 143311313 is about 11971.2703168878. The cubic root of 143311313 is about 523.3113550031.

Adding to 143311313 its reverse (313113341), we get a palindrome (456424654).

The spelling of 143311313 in words is "one hundred forty-three million, three hundred eleven thousand, three hundred thirteen".