1311422616123 has 4 divisors (see below), whose sum is σ = 1748563488168. Its totient is φ = 874281744080.

The previous prime is 1311422616079. The next prime is 1311422616131. The reversal of 1311422616123 is 3216162241131.

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 1311422616123 - 2¹⁶ = 1311422550587 is a prime.

It is a super-2 number, since 2×1311422616123² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1311422614123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218570436018 + ... + 218570436023.

It is an arithmetic number, because the mean of its divisors is an integer number (437140872042).

Almost surely, 2^{1311422616123} is an apocalyptic number.

1311422616123 is a deficient number, since it is larger than the sum of its proper divisors (437140872045).

1311422616123 is an equidigital number, since it uses as much as digits as its factorization.

1311422616123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437140872044.

The product of its digits is 10368, while the sum is 33.

Adding to 1311422616123 its reverse (3216162241131), we get a palindrome (4527584857254).

The spelling of 1311422616123 in words is "one trillion, three hundred eleven billion, four hundred twenty-two million, six hundred sixteen thousand, one hundred twenty-three".