2031143111121 has 32 divisors (see below), whose sum is σ = 2800346250240. Its totient is φ = 1308644812800.

The previous prime is 2031143111117. The next prime is 2031143111161. The reversal of 2031143111121 is 1211113411302.

It is a happy number.

It is not a de Polignac number, because 2031143111121 - 2² = 2031143111117 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2031143111161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67328281 + ... + 67358441.

It is an arithmetic number, because the mean of its divisors is an integer number (87510820320).

Almost surely, 2^{2031143111121} is an apocalyptic number.

It is an amenable number.

2031143111121 is a deficient number, since it is larger than the sum of its proper divisors (769203139119).

2031143111121 is a wasteful number, since it uses less digits than its factorization.

2031143111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35337.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 2031143111121 its reverse (1211113411302), we get a palindrome (3242256522423).

The spelling of 2031143111121 in words is "two trillion, thirty-one billion, one hundred forty-three million, one hundred eleven thousand, one hundred twenty-one".