1305235147 has 2 divisors, whose sum is σ = 1305235148. Its totient is φ = 1305235146.

The previous prime is 1305235069. The next prime is 1305235157. The reversal of 1305235147 is 7415325031.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1305235147 is a prime.

It is a super-2 number, since 2×1305235147² = 3407277577928223218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1305235157) 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, 652617573 + 652617574.

It is an arithmetic number, because the mean of its divisors is an integer number (652617574).

Almost surely, 2^1305235147 is an apocalyptic number.

1305235147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305235147 is an equidigital number, since it uses as much as digits as its factorization.

1305235147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 1305235147 is about 36128.0382390187. The cubic root of 1305235147 is about 1092.8559470772.

The spelling of 1305235147 in words is "one billion, three hundred five million, two hundred thirty-five thousand, one hundred forty-seven".