1305432231211 has 4 divisors (see below), whose sum is σ = 1305561351424. Its totient is φ = 1305303111000.

The previous prime is 1305432231209. The next prime is 1305432231227. The reversal of 1305432231211 is 1121322345031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1305432231211 - 2¹ = 1305432231209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1305432231211.

It is not an unprimeable number, because it can be changed into a prime (1305432231911) 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, 64544940 + ... + 64565161.

It is an arithmetic number, because the mean of its divisors is an integer number (326390337856).

Almost surely, 2^{1305432231211} is an apocalyptic number.

1305432231211 is a deficient number, since it is larger than the sum of its proper divisors (129120213).

1305432231211 is a wasteful number, since it uses less digits than its factorization.

1305432231211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129120212.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 1305432231211 its reverse (1121322345031), we get a palindrome (2426754576242).

The spelling of 1305432231211 in words is "one trillion, three hundred five billion, four hundred thirty-two million, two hundred thirty-one thousand, two hundred eleven".