3123320112031 has 4 divisors (see below), whose sum is σ = 3569508699472. Its totient is φ = 2677131524592.

The previous prime is 3123320112019. The next prime is 3123320112037. The reversal of 3123320112031 is 1302110233213.

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

It is not a de Polignac number, because 3123320112031 - 2⁷ = 3123320111903 is a prime.

It is a super-2 number, since 2×3123320112031² (a number of 26 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 = 3123320111993 and 3123320112011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123320112037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223094293710 + ... + 223094293723.

It is an arithmetic number, because the mean of its divisors is an integer number (892377174868).

Almost surely, 2^{3123320112031} is an apocalyptic number.

3123320112031 is a deficient number, since it is larger than the sum of its proper divisors (446188587441).

3123320112031 is an equidigital number, since it uses as much as digits as its factorization.

3123320112031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446188587440.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 3123320112031 its reverse (1302110233213), we get a palindrome (4425430345244).

The spelling of 3123320112031 in words is "three trillion, one hundred twenty-three billion, three hundred twenty million, one hundred twelve thousand, thirty-one".