1312133143 has 2 divisors, whose sum is σ = 1312133144. Its totient is φ = 1312133142.

The previous prime is 1312133107. The next prime is 1312133149. The reversal of 1312133143 is 3413312131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1312133143 - 2²⁹ = 775262231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312133149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656066571 + 656066572.

It is an arithmetic number, because the mean of its divisors is an integer number (656066572).

Almost surely, 2^1312133143 is an apocalyptic number.

1312133143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312133143 is an equidigital number, since it uses as much as digits as its factorization.

1312133143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 22.

The square root of 1312133143 is about 36223.3784040086. The cubic root of 1312133143 is about 1094.7777654819. Note that the first 4 decimals are identical.

Adding to 1312133143 its reverse (3413312131), we get a palindrome (4725445274).

It can be divided in two parts, 13121 and 33143, that added together give a palindrome (46264).

The spelling of 1312133143 in words is "one billion, three hundred twelve million, one hundred thirty-three thousand, one hundred forty-three".