2131020111 has 8 divisors (see below), whose sum is σ = 3099665664. Its totient is φ = 1291527320.

The previous prime is 2131020061. The next prime is 2131020169. The reversal of 2131020111 is 1110201312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2131020111 - 2¹⁰ = 2131019087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131020211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32288151 + ... + 32288216.

It is an arithmetic number, because the mean of its divisors is an integer number (387458208).

Almost surely, 2^2131020111 is an apocalyptic number.

2131020111 is a deficient number, since it is larger than the sum of its proper divisors (968645553).

2131020111 is a wasteful number, since it uses less digits than its factorization.

2131020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64576381.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 2131020111 is about 46162.9733769392. The cubic root of 2131020111 is about 1286.8537212798.

Adding to 2131020111 its reverse (1110201312), we get a palindrome (3241221423).

The spelling of 2131020111 in words is "two billion, one hundred thirty-one million, twenty thousand, one hundred eleven".