1305971132 has 24 divisors (see below), whose sum is σ = 2305857456. Its totient is φ = 647170688.

The previous prime is 1305971113. The next prime is 1305971141. The reversal of 1305971132 is 2311795031.

It is a super-2 number, since 2×1305971132² = 3411121195234722848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422063 + ... + 425145.

It is an arithmetic number, because the mean of its divisors is an integer number (96077394).

Almost surely, 2^1305971132 is an apocalyptic number.

It is an amenable number.

1305971132 is a deficient number, since it is larger than the sum of its proper divisors (999886324).

1305971132 is a wasteful number, since it uses less digits than its factorization.

1305971132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3997 (or 3995 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 1305971132 is about 36138.2225904927. Note that the first 3 decimals coincide. The cubic root of 1305971132 is about 1093.0613186163.

The spelling of 1305971132 in words is "one billion, three hundred five million, nine hundred seventy-one thousand, one hundred thirty-two".