1305433531340 has 12 divisors (see below), whose sum is σ = 2741410415856. Its totient is φ = 522173412528.

The previous prime is 1305433531313. The next prime is 1305433531357. The reversal of 1305433531340 is 431353345031.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1305433531340.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32635838264 + ... + 32635838303.

It is an arithmetic number, because the mean of its divisors is an integer number (228450867988).

Almost surely, 2^{1305433531340} is an apocalyptic number.

1305433531340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1305433531340 is an abundant number, since it is smaller than the sum of its proper divisors (1435976884516).

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

1305433531340 is a wasteful number, since it uses less digits than its factorization.

1305433531340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65271676576 (or 65271676574 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 35.

Adding to 1305433531340 its reverse (431353345031), we get a palindrome (1736786876371).

The spelling of 1305433531340 in words is "one trillion, three hundred five billion, four hundred thirty-three million, five hundred thirty-one thousand, three hundred forty".