1305061332 has 12 divisors (see below), whose sum is σ = 3045143136. Its totient is φ = 435020440.

The previous prime is 1305061291. The next prime is 1305061357. The reversal of 1305061332 is 2331605031.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1305061332² = 3406370160563228448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 54377544 + ... + 54377567.

It is an arithmetic number, because the mean of its divisors is an integer number (253761928).

Almost surely, 2^1305061332 is an apocalyptic number.

1305061332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1305061332 is an abundant number, since it is smaller than the sum of its proper divisors (1740081804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1305061332 is a wasteful number, since it uses less digits than its factorization.

1305061332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108755118 (or 108755116 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 1305061332 is about 36125.6326172982. The cubic root of 1305061332 is about 1092.8074339314.

Adding to 1305061332 its reverse (2331605031), we get a palindrome (3636666363).

The spelling of 1305061332 in words is "one billion, three hundred five million, sixty-one thousand, three hundred thirty-two".