2112131 has 8 divisors (see below), whose sum is σ = 2556000. Its totient is φ = 1703808.

The previous prime is 2112127. The next prime is 2112139. The reversal of 2112131 is 1312112.

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

It is not a de Polignac number, because 2112131 - 2² = 2112127 is a prime.

It is a super-2 number, since 2×2112131² = 8922194722322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8756 + ... + 8993.

It is an arithmetic number, because the mean of its divisors is an integer number (319500).

2^2112131 is an apocalyptic number.

2112131 is a deficient number, since it is larger than the sum of its proper divisors (443869).

2112131 is a wasteful number, since it uses less digits than its factorization.

2112131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17773.

The product of its digits is 12, while the sum is 11.

The square root of 2112131 is about 1453.3172399721. The cubic root of 2112131 is about 128.3040258407.

Adding to 2112131 its reverse (1312112), we get a palindrome (3424243).

It can be divided in two parts, 2112 and 131, that multiplied together give a palindrome (276672).

The spelling of 2112131 in words is "two million, one hundred twelve thousand, one hundred thirty-one".