11312313123 has 16 divisors (see below), whose sum is σ = 15938104320. Its totient is φ = 7122333504.

The previous prime is 11312313097. The next prime is 11312313143. The reversal of 11312313123 is 32131321311.

It is a happy number.

It is not a de Polignac number, because 11312313123 - 2⁵ = 11312313091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11312313123.

It is not an unprimeable number, because it can be changed into a prime (11312313143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1032186 + ... + 1043087.

It is an arithmetic number, because the mean of its divisors is an integer number (996131520).

Almost surely, 2^11312313123 is an apocalyptic number.

11312313123 is a deficient number, since it is larger than the sum of its proper divisors (4625791197).

11312313123 is a wasteful number, since it uses less digits than its factorization.

11312313123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075378.

The product of its digits is 324, while the sum is 21.

Adding to 11312313123 its reverse (32131321311), we get a palindrome (43443634434).

The spelling of 11312313123 in words is "eleven billion, three hundred twelve million, three hundred thirteen thousand, one hundred twenty-three".