2031131213323 has 4 divisors (see below), whose sum is σ = 2058954928648. Its totient is φ = 2003307498000.

The previous prime is 2031131213311. The next prime is 2031131213327. The reversal of 2031131213323 is 3233121311302.

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-2031131213323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2031131213327) 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, 13911857553 + ... + 13911857698.

It is an arithmetic number, because the mean of its divisors is an integer number (514738732162).

Almost surely, 2^{2031131213323} is an apocalyptic number.

2031131213323 is a deficient number, since it is larger than the sum of its proper divisors (27823715325).

2031131213323 is an equidigital number, since it uses as much as digits as its factorization.

2031131213323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27823715324.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 2031131213323 its reverse (3233121311302), we get a palindrome (5264252524625).

The spelling of 2031131213323 in words is "two trillion, thirty-one billion, one hundred thirty-one million, two hundred thirteen thousand, three hundred twenty-three".