1312243463 has 2 divisors, whose sum is σ = 1312243464. Its totient is φ = 1312243462.

The previous prime is 1312243421. The next prime is 1312243469. The reversal of 1312243463 is 3643422131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1312243463 - 2¹⁴ = 1312227079 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 (1312243469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656121731 + 656121732.

It is an arithmetic number, because the mean of its divisors is an integer number (656121732).

Almost surely, 2^1312243463 is an apocalyptic number.

1312243463 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312243463 is an equidigital number, since it uses as much as digits as its factorization.

1312243463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 29.

The square root of 1312243463 is about 36224.9011454828. The cubic root of 1312243463 is about 1094.8084464381.

Adding to 1312243463 its reverse (3643422131), we get a palindrome (4955665594).

The spelling of 1312243463 in words is "one billion, three hundred twelve million, two hundred forty-three thousand, four hundred sixty-three".