1312973743 has 2 divisors, whose sum is σ = 1312973744. Its totient is φ = 1312973742.

The previous prime is 1312973737. The next prime is 1312973773. The reversal of 1312973743 is 3473792131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1312973743 - 2²¹ = 1310876591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1312973696 and 1312973705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312973723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656486871 + 656486872.

It is an arithmetic number, because the mean of its divisors is an integer number (656486872).

Almost surely, 2^1312973743 is an apocalyptic number.

1312973743 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312973743 is an equidigital number, since it uses as much as digits as its factorization.

1312973743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 40.

The square root of 1312973743 is about 36234.9795501529. The cubic root of 1312973743 is about 1095.0115003344.

The spelling of 1312973743 in words is "one billion, three hundred twelve million, nine hundred seventy-three thousand, seven hundred forty-three".