1305431532532 has 12 divisors (see below), whose sum is σ = 2287164681760. Its totient is φ = 651955909176.

The previous prime is 1305431532527. The next prime is 1305431532539. The reversal of 1305431532532 is 2352351345031.

It is a super-2 number, since 2×1305431532532² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1305431532491 and 1305431532500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305431532539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189960408 + ... + 189967279.

Almost surely, 2^{1305431532532} is an apocalyptic number.

It is an amenable number.

1305431532532 is a deficient number, since it is larger than the sum of its proper divisors (981733149228).

1305431532532 is a wasteful number, since it uses less digits than its factorization.

1305431532532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379928550 (or 379928548 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 37.

Adding to 1305431532532 its reverse (2352351345031), we get a palindrome (3657782877563).

The spelling of 1305431532532 in words is "one trillion, three hundred five billion, four hundred thirty-one million, five hundred thirty-two thousand, five hundred thirty-two".