123232312013 has 4 divisors (see below), whose sum is σ = 125071600320. Its totient is φ = 121393023708.

The previous prime is 123232312009. The next prime is 123232312031. The reversal of 123232312013 is 310213232321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310213232321 = 367 ⋅845267663.

It is a cyclic number.

It is not a de Polignac number, because 123232312013 - 2² = 123232312009 is a prime.

It is a super-2 number, since 2×123232312013² (a number of 23 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 123232312013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123232312613) 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, 919644053 + ... + 919644186.

It is an arithmetic number, because the mean of its divisors is an integer number (31267900080).

Almost surely, 2^123232312013 is an apocalyptic number.

It is an amenable number.

123232312013 is a deficient number, since it is larger than the sum of its proper divisors (1839288307).

123232312013 is an equidigital number, since it uses as much as digits as its factorization.

123232312013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839288306.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 123232312013 its reverse (310213232321), we get a palindrome (433445544334).

The spelling of 123232312013 in words is "one hundred twenty-three billion, two hundred thirty-two million, three hundred twelve thousand, thirteen".