1311632201123 has 4 divisors (see below), whose sum is σ = 1339539269280. Its totient is φ = 1283725132968.

The previous prime is 1311632201111. The next prime is 1311632201141. The reversal of 1311632201123 is 3211022361131.

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 1311632201123 - 2⁶ = 1311632201059 is a prime.

It is a super-2 number, since 2×1311632201123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311632201092 and 1311632201101.

It is not an unprimeable number, because it can be changed into a prime (1311632201183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13953534008 + ... + 13953534101.

It is an arithmetic number, because the mean of its divisors is an integer number (334884817320).

Almost surely, 2^{1311632201123} is an apocalyptic number.

1311632201123 is a deficient number, since it is larger than the sum of its proper divisors (27907068157).

1311632201123 is an equidigital number, since it uses as much as digits as its factorization.

1311632201123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27907068156.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 1311632201123 its reverse (3211022361131), we get a palindrome (4522654562254).

The spelling of 1311632201123 in words is "one trillion, three hundred eleven billion, six hundred thirty-two million, two hundred one thousand, one hundred twenty-three".