1305011087 has 2 divisors, whose sum is σ = 1305011088. Its totient is φ = 1305011086.

The previous prime is 1305011039. The next prime is 1305011093. The reversal of 1305011087 is 7801105031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1305011087 - 2¹² = 1305006991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1305011287) 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, 652505543 + 652505544.

It is an arithmetic number, because the mean of its divisors is an integer number (652505544).

Almost surely, 2^1305011087 is an apocalyptic number.

1305011087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305011087 is an equidigital number, since it uses as much as digits as its factorization.

1305011087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 1305011087 is about 36124.9371902568. The cubic root of 1305011087 is about 1092.7934093507.

The spelling of 1305011087 in words is "one billion, three hundred five million, eleven thousand, eighty-seven".