123312101311 has 4 divisors (see below), whose sum is σ = 140928115792. Its totient is φ = 105696086832.

The previous prime is 123312101303. The next prime is 123312101327. The reversal of 123312101311 is 113101213321.

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

It is not a de Polignac number, because 123312101311 - 2³ = 123312101303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123312101371) 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, 8808007230 + ... + 8808007243.

It is an arithmetic number, because the mean of its divisors is an integer number (35232028948).

Almost surely, 2^123312101311 is an apocalyptic number.

123312101311 is a deficient number, since it is larger than the sum of its proper divisors (17616014481).

123312101311 is an equidigital number, since it uses as much as digits as its factorization.

123312101311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17616014480.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 123312101311 its reverse (113101213321), we get a palindrome (236413314632).

The spelling of 123312101311 in words is "one hundred twenty-three billion, three hundred twelve million, one hundred one thousand, three hundred eleven".