2105442111031 has 16 divisors (see below), whose sum is σ = 2590944295680. Its totient is φ = 1669719646080.

The previous prime is 2105442111011. The next prime is 2105442111061. The reversal of 2105442111031 is 1301112445012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2105442111031 - 2²⁵ = 2105408556599 is a prime.

It is a super-2 number, since 2×2105442111031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2105442110987 and 2105442111005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105442111011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149931885 + ... + 149945926.

It is an arithmetic number, because the mean of its divisors is an integer number (161934018480).

Almost surely, 2^{2105442111031} is an apocalyptic number.

2105442111031 is a deficient number, since it is larger than the sum of its proper divisors (485502184649).

2105442111031 is a wasteful number, since it uses less digits than its factorization.

2105442111031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299877894.

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 2105442111031 its reverse (1301112445012), we get a palindrome (3406554556043).

The spelling of 2105442111031 in words is "two trillion, one hundred five billion, four hundred forty-two million, one hundred eleven thousand, thirty-one".