1311111201324 has 12 divisors (see below), whose sum is σ = 3059259469784. Its totient is φ = 437037067104.

The previous prime is 1311111201269. The next prime is 1311111201347. The reversal of 1311111201324 is 4231021111131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1311111201324.

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, 54629633377 + ... + 54629633400.

Almost surely, 2^{1311111201324} is an apocalyptic number.

It is an amenable number.

1311111201324 is an abundant number, since it is smaller than the sum of its proper divisors (1748148268460).

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

1311111201324 is a wasteful number, since it uses less digits than its factorization.

1311111201324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109259266784 (or 109259266782 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 1311111201324 its reverse (4231021111131), we get a palindrome (5542132312455).

The spelling of 1311111201324 in words is "one trillion, three hundred eleven billion, one hundred eleven million, two hundred one thousand, three hundred twenty-four".