1213310143 has 2 divisors, whose sum is σ = 1213310144. Its totient is φ = 1213310142.

The previous prime is 1213310141. The next prime is 1213310159. The reversal of 1213310143 is 3410133121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1213310143 - 2¹ = 1213310141 is a prime.

Together with 1213310141, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1213310143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213310141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606655071 + 606655072.

It is an arithmetic number, because the mean of its divisors is an integer number (606655072).

Almost surely, 2^1213310143 is an apocalyptic number.

1213310143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213310143 is an equidigital number, since it uses as much as digits as its factorization.

1213310143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1213310143 is about 34832.6017259693. The cubic root of 1213310143 is about 1066.5730588536.

Adding to 1213310143 its reverse (3410133121), we get a palindrome (4623443264).

The spelling of 1213310143 in words is "one billion, two hundred thirteen million, three hundred ten thousand, one hundred forty-three".