3131112323 has 4 divisors (see below), whose sum is σ = 3190189968. Its totient is φ = 3072034680.

The previous prime is 3131112311. The next prime is 3131112331. The reversal of 3131112323 is 3232111313.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3131112323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3131112295 and 3131112304.

It is not an unprimeable number, because it can be changed into a prime (3131112823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29538743 + ... + 29538848.

It is an arithmetic number, because the mean of its divisors is an integer number (797547492).

Almost surely, 2^3131112323 is an apocalyptic number.

3131112323 is a deficient number, since it is larger than the sum of its proper divisors (59077645).

3131112323 is an equidigital number, since it uses as much as digits as its factorization.

3131112323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59077644.

The product of its digits is 324, while the sum is 20.

The square root of 3131112323 is about 55956.3430095284. The cubic root of 3131112323 is about 1462.9614504910.

Adding to 3131112323 its reverse (3232111313), we get a palindrome (6363223636).

It can be divided in two parts, 31311 and 12323, that added together give a palindrome (43634).

The spelling of 3131112323 in words is "three billion, one hundred thirty-one million, one hundred twelve thousand, three hundred twenty-three".