12031022031311 has 16 divisors (see below), whose sum is σ = 12757527686400. Its totient is φ = 11325802890240.

The previous prime is 12031022031289. The next prime is 12031022031331. The reversal of 12031022031311 is 11313022013021.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12031022031311 is a prime.

It is a super-2 number, since 2×12031022031311² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031022031331) 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 15 ways as a sum of consecutive naturals, for example, 4187615 + ... + 6449663.

It is an arithmetic number, because the mean of its divisors is an integer number (797345480400).

Almost surely, 2^{12031022031311} is an apocalyptic number.

12031022031311 is a deficient number, since it is larger than the sum of its proper divisors (726505655089).

12031022031311 is a wasteful number, since it uses less digits than its factorization.

12031022031311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266754.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 12031022031311 its reverse (11313022013021), we get a palindrome (23344044044332).

The spelling of 12031022031311 in words is "twelve trillion, thirty-one billion, twenty-two million, thirty-one thousand, three hundred eleven".