1213143143 has 2 divisors, whose sum is σ = 1213143144. Its totient is φ = 1213143142.

The previous prime is 1213143121. The next prime is 1213143163. The reversal of 1213143143 is 3413413121.

It is a strong prime.

It is an emirp because it is prime and its reverse (3413413121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1213143143 - 2⁶ = 1213143079 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213143163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606571571 + 606571572.

It is an arithmetic number, because the mean of its divisors is an integer number (606571572).

Almost surely, 2^1213143143 is an apocalyptic number.

1213143143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213143143 is an equidigital number, since it uses as much as digits as its factorization.

1213143143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

The square root of 1213143143 is about 34830.2044639419. The cubic root of 1213143143 is about 1066.5241222388.

Adding to 1213143143 its reverse (3413413121), we get a palindrome (4626556264).

The spelling of 1213143143 in words is "one billion, two hundred thirteen million, one hundred forty-three thousand, one hundred forty-three".