2111131 has 16 divisors (see below), whose sum is σ = 2451456. Its totient is φ = 1800000.

The previous prime is 2111129. The next prime is 2111159. The reversal of 2111131 is 1311112.

It is a 6-Lehmer number, since φ(2111131) divides (2111131-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 2111131 - 2¹ = 2111129 is a prime.

It is a super-2 number, since 2×2111131² = 8913748198322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2111231) 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, 13906 + ... + 14056.

It is an arithmetic number, because the mean of its divisors is an integer number (153216).

2^2111131 is an apocalyptic number.

2111131 is a deficient number, since it is larger than the sum of its proper divisors (340325).

2111131 is a wasteful number, since it uses less digits than its factorization.

2111131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234.

The product of its digits is 6, while the sum is 10.

The square root of 2111131 is about 1452.9731587335. The cubic root of 2111131 is about 128.2837738961.

Adding to 2111131 its reverse (1311112), we get a palindrome (3422243).

The spelling of 2111131 in words is "two million, one hundred eleven thousand, one hundred thirty-one".