1312140043 has 2 divisors, whose sum is σ = 1312140044. Its totient is φ = 1312140042.

The previous prime is 1312140017. The next prime is 1312140047. The reversal of 1312140043 is 3400412131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1312140043 - 2⁹ = 1312139531 is a prime.

It is a super-2 number, since 2×1312140043² = 3443422984888083698, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1312140043.

It is not a weakly prime, because it can be changed into another prime (1312140047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656070021 + 656070022.

It is an arithmetic number, because the mean of its divisors is an integer number (656070022).

Almost surely, 2^1312140043 is an apocalyptic number.

1312140043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312140043 is an equidigital number, since it uses as much as digits as its factorization.

1312140043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1312140043 is about 36223.4736462422. The cubic root of 1312140043 is about 1094.7796844826.

Adding to 1312140043 its reverse (3400412131), we get a palindrome (4712552174).

The spelling of 1312140043 in words is "one billion, three hundred twelve million, one hundred forty thousand, forty-three".