1312032211123 has 4 divisors (see below), whose sum is σ = 1312048202608. Its totient is φ = 1312016219640.

The previous prime is 1312032211079. The next prime is 1312032211151. The reversal of 1312032211123 is 3211122302131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312032211123 is a prime.

It is a super-2 number, since 2×1312032211123² (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 = 1312032211094 and 1312032211103.

It is not an unprimeable number, because it can be changed into a prime (1312032211163) 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, 7872036 + ... + 8036977.

It is an arithmetic number, because the mean of its divisors is an integer number (328012050652).

Almost surely, 2^{1312032211123} is an apocalyptic number.

1312032211123 is a deficient number, since it is larger than the sum of its proper divisors (15991485).

1312032211123 is an equidigital number, since it uses as much as digits as its factorization.

1312032211123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15991484.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1312032211123 its reverse (3211122302131), we get a palindrome (4523154513254).

The spelling of 1312032211123 in words is "one trillion, three hundred twelve billion, thirty-two million, two hundred eleven thousand, one hundred twenty-three".