1311211432311 has 32 divisors (see below), whose sum is σ = 1920440586240. Its totient is φ = 789177676800.

The previous prime is 1311211432277. The next prime is 1311211432379. The reversal of 1311211432311 is 1132341121131.

It is not a de Polignac number, because 1311211432311 - 2⁷ = 1311211432183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311211432711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3562275 + ... + 3913083.

It is an arithmetic number, because the mean of its divisors is an integer number (60013768320).

Almost surely, 2^{1311211432311} is an apocalyptic number.

1311211432311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1311211432311 is a deficient number, since it is larger than the sum of its proper divisors (609229153929).

1311211432311 is a wasteful number, since it uses less digits than its factorization.

1311211432311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351607.

The product of its digits is 432, while the sum is 24.

Adding to 1311211432311 its reverse (1132341121131), we get a palindrome (2443552553442).

The spelling of 1311211432311 in words is "one trillion, three hundred eleven billion, two hundred eleven million, four hundred thirty-two thousand, three hundred eleven".