1305132215 has 16 divisors (see below), whose sum is σ = 1598002560. Its totient is φ = 1022994720.

The previous prime is 1305132203. The next prime is 1305132229. The reversal of 1305132215 is 5122315031.

It is a happy number.

It is not a de Polignac number, because 1305132215 - 2⁶ = 1305132151 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 83360 + ... + 97770.

It is an arithmetic number, because the mean of its divisors is an integer number (99875160).

Almost surely, 2^1305132215 is an apocalyptic number.

1305132215 is a deficient number, since it is larger than the sum of its proper divisors (292870345).

1305132215 is a wasteful number, since it uses less digits than its factorization.

1305132215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14782.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1305132215 is about 36126.6136663817. The cubic root of 1305132215 is about 1092.8272184593.

Adding to 1305132215 its reverse (5122315031), we get a palindrome (6427447246).

The spelling of 1305132215 in words is "one billion, three hundred five million, one hundred thirty-two thousand, two hundred fifteen".