12035123031 has 4 divisors (see below), whose sum is σ = 16046830712.
Its totient is φ = 8023415352.
The previous prime is 12035122999. The next prime is 12035123053. The reversal of 12035123031 is 13032153021.
Adding to 12035123031 its reverse (13032153021), we get a palindrome (25067276052).
It is a semiprime because it is the product of two primes.
It is not a de Polignac number, because 12035123031 - 25 = 12035122999 is a prime.
It is a super-2 number, since 2×120351230312 (a number of 21 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 12035122989 and 12035123007.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12035123081) 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, 2005853836 + ... + 2005853841.
It is an arithmetic number, because the mean of its divisors is an integer number (4011707678).
Almost surely, 212035123031 is an apocalyptic number.
12035123031 is a deficient number, since it is larger than the sum of its proper divisors (4011707681).
12035123031 is an equidigital number, since it uses as much as digits as its factorization.
12035123031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4011707680.
The product of its (nonzero) digits is 540, while the sum is 21.
The spelling of 12035123031 in words is "twelve billion, thirty-five million, one hundred twenty-three thousand, thirty-one".