1340100287 has 2 divisors, whose sum is σ = 1340100288. Its totient is φ = 1340100286.

The previous prime is 1340100257. The next prime is 1340100337. The reversal of 1340100287 is 7820010431.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1340100287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340100227) 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, 670050143 + 670050144.

It is an arithmetic number, because the mean of its divisors is an integer number (670050144).

Almost surely, 2^1340100287 is an apocalyptic number.

1340100287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340100287 is an equidigital number, since it uses as much as digits as its factorization.

1340100287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 1340100287 is about 36607.3802258506. The cubic root of 1340100287 is about 1102.5012741933.

The spelling of 1340100287 in words is "one billion, three hundred forty million, one hundred thousand, two hundred eighty-seven".