1211030143 has 2 divisors, whose sum is σ = 1211030144. Its totient is φ = 1211030142.

The previous prime is 1211030141. The next prime is 1211030213. The reversal of 1211030143 is 3410301121.

It is a weak prime.

It is an emirp because it is prime and its reverse (3410301121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1211030143 - 2¹ = 1211030141 is a prime.

Together with 1211030141, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211030141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605515071 + 605515072.

It is an arithmetic number, because the mean of its divisors is an integer number (605515072).

Almost surely, 2^1211030143 is an apocalyptic number.

1211030143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211030143 is an equidigital number, since it uses as much as digits as its factorization.

1211030143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1211030143 is about 34799.8583761486. The cubic root of 1211030143 is about 1065.9045539330.

Adding to 1211030143 its reverse (3410301121), we get a palindrome (4621331264).

The spelling of 1211030143 in words is "one billion, two hundred eleven million, thirty thousand, one hundred forty-three".