1347785723 has 2 divisors, whose sum is σ = 1347785724. Its totient is φ = 1347785722.

The previous prime is 1347785693. The next prime is 1347785731. The reversal of 1347785723 is 3275877431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1347785723 - 2¹² = 1347781627 is a prime.

It is not a weakly prime, because it can be changed into another prime (1347785773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 673892861 + 673892862.

It is an arithmetic number, because the mean of its divisors is an integer number (673892862).

Almost surely, 2^1347785723 is an apocalyptic number.

1347785723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1347785723 is an equidigital number, since it uses as much as digits as its factorization.

1347785723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 987840, while the sum is 47.

The square root of 1347785723 is about 36712.2012824075. The cubic root of 1347785723 is about 1104.6048621657.

The spelling of 1347785723 in words is "one billion, three hundred forty-seven million, seven hundred eighty-five thousand, seven hundred twenty-three".