1311213222311 has 8 divisors (see below), whose sum is σ = 1316510539344. Its totient is φ = 1305916488000.

The previous prime is 1311213222287. The next prime is 1311213222331. The reversal of 1311213222311 is 1132223121131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1311213222311 - 2²⁶ = 1311146113447 is a prime.

It is a super-2 number, since 2×1311213222311² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311213222331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4686515 + ... + 4958411.

It is an arithmetic number, because the mean of its divisors is an integer number (164563817418).

Almost surely, 2^{1311213222311} is an apocalyptic number.

1311213222311 is a deficient number, since it is larger than the sum of its proper divisors (5297317033).

1311213222311 is a wasteful number, since it uses less digits than its factorization.

1311213222311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291361.

The product of its digits is 432, while the sum is 23.

Adding to 1311213222311 its reverse (1132223121131), we get a palindrome (2443436343442).

The spelling of 1311213222311 in words is "one trillion, three hundred eleven billion, two hundred thirteen million, two hundred twenty-two thousand, three hundred eleven".