123211323113 has 4 divisors (see below), whose sum is σ = 130459048020. Its totient is φ = 115963598208.

The previous prime is 123211323107. The next prime is 123211323119. The reversal of 123211323113 is 311323112321.

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 (123211323107) and next prime (123211323119).

It can be written as a sum of positive squares in 2 ways, for example, as 115119061264 + 8092261849 = 339292^2 + 89957^2 .

It is a cyclic number.

It is not a de Polignac number, because 123211323113 - 2⁴ = 123211323097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123211323119) 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, 3623862428 + ... + 3623862461.

It is an arithmetic number, because the mean of its divisors is an integer number (32614762005).

Almost surely, 2^123211323113 is an apocalyptic number.

It is an amenable number.

123211323113 is a deficient number, since it is larger than the sum of its proper divisors (7247724907).

123211323113 is an equidigital number, since it uses as much as digits as its factorization.

123211323113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7247724906.

The product of its digits is 648, while the sum is 23.

Adding to 123211323113 its reverse (311323112321), we get a palindrome (434534435434).

The spelling of 123211323113 in words is "one hundred twenty-three billion, two hundred eleven million, three hundred twenty-three thousand, one hundred thirteen".