1312140143 has 2 divisors, whose sum is σ = 1312140144. Its totient is φ = 1312140142.

The previous prime is 1312140107. The next prime is 1312140149. The reversal of 1312140143 is 3410412131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1312140143 - 2⁶ = 1312140079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312140149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656070071 + 656070072.

It is an arithmetic number, because the mean of its divisors is an integer number (656070072).

Almost surely, 2^1312140143 is an apocalyptic number.

1312140143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312140143 is an equidigital number, since it uses as much as digits as its factorization.

1312140143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1312140143 is about 36223.4750265625. The cubic root of 1312140143 is about 1094.7797122942.

Adding to 1312140143 its reverse (3410412131), we get a palindrome (4722552274).

The spelling of 1312140143 in words is "one billion, three hundred twelve million, one hundred forty thousand, one hundred forty-three".