12031100031011 has 32 divisors (see below), whose sum is σ = 12979768209408. Its totient is φ = 11130918946560.

The previous prime is 12031100031007. The next prime is 12031100031037. The reversal of 12031100031011 is 11013000113021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12031100031011 - 2² = 12031100031007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12031100231011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30265406 + ... + 30660348.

It is an arithmetic number, because the mean of its divisors is an integer number (405617756544).

Almost surely, 2^{12031100031011} is an apocalyptic number.

12031100031011 is a deficient number, since it is larger than the sum of its proper divisors (948668178397).

12031100031011 is a wasteful number, since it uses less digits than its factorization.

12031100031011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395531.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 12031100031011 its reverse (11013000113021), we get a palindrome (23044100144032).

The spelling of 12031100031011 in words is "twelve trillion, thirty-one billion, one hundred million, thirty-one thousand, eleven".