1305431032212 has 36 divisors (see below), whose sum is σ = 3301058802496. Its totient is φ = 434982897360.

The previous prime is 1305431032201. The next prime is 1305431032261. The reversal of 1305431032212 is 2122301345031.

1305431032212 is a `hidden beast` number, since 1 + 3 + 0 + 5 + 431 + 0 + 3 + 221 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1305431032212² (a number of 25 digits) 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 (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6600364 + ... + 6795267.

Almost surely, 2^{1305431032212} is an apocalyptic number.

1305431032212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1305431032212 is an abundant number, since it is smaller than the sum of its proper divisors (1995627770284).

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

1305431032212 is a wasteful number, since it uses less digits than its factorization.

1305431032212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13398348 (or 13398343 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 1305431032212 its reverse (2122301345031), we get a palindrome (3427732377243).

The spelling of 1305431032212 in words is "one trillion, three hundred five billion, four hundred thirty-one million, thirty-two thousand, two hundred twelve".