12313021123 has 4 divisors (see below), whose sum is σ = 13260176608. Its totient is φ = 11365865640.

The previous prime is 12313021093. The next prime is 12313021153. The reversal of 12313021123 is 32112031321.

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

It is an interprime number because it is at equal distance from previous prime (12313021093) and next prime (12313021153).

It is a cyclic number.

It is not a de Polignac number, because 12313021123 - 2²⁵ = 12279466691 is a prime.

It is a super-2 number, since 2×12313021123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12313021123.

It is not an unprimeable number, because it can be changed into a prime (12313021153) 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, 473577723 + ... + 473577748.

It is an arithmetic number, because the mean of its divisors is an integer number (3315044152).

Almost surely, 2^12313021123 is an apocalyptic number.

12313021123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12313021123 is a deficient number, since it is larger than the sum of its proper divisors (947155485).

12313021123 is an equidigital number, since it uses as much as digits as its factorization.

12313021123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947155484.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12313021123 its reverse (32112031321), we get a palindrome (44425052444).

The spelling of 12313021123 in words is "twelve billion, three hundred thirteen million, twenty-one thousand, one hundred twenty-three".