2111302111031 has 4 divisors (see below), whose sum is σ = 2111402522064. Its totient is φ = 2111201700000.

The previous prime is 2111302110959. The next prime is 2111302111049. The reversal of 2111302111031 is 1301112031112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2111302111031 - 2¹⁴ = 2111302094647 is a prime.

It is a super-2 number, since 2×2111302111031² (a number of 25 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 (2111302111531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50173970 + ... + 50216031.

It is an arithmetic number, because the mean of its divisors is an integer number (527850630516).

Almost surely, 2^{2111302111031} is an apocalyptic number.

2111302111031 is a deficient number, since it is larger than the sum of its proper divisors (100411033).

2111302111031 is a wasteful number, since it uses less digits than its factorization.

2111302111031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100411032.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 2111302111031 its reverse (1301112031112), we get a palindrome (3412414142143).

The spelling of 2111302111031 in words is "two trillion, one hundred eleven billion, three hundred two million, one hundred eleven thousand, thirty-one".