2131123 has 8 divisors (see below), whose sum is σ = 2257200. Its totient is φ = 2008608.

The previous prime is 2131109. The next prime is 2131127. The reversal of 2131123 is 3211312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2131123 is a prime.

It is a super-2 number, since 2×2131123² = 9083370482258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131127) 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, 393 + ... + 2101.

It is an arithmetic number, because the mean of its divisors is an integer number (282150).

2^2131123 is an apocalyptic number.

2131123 is a deficient number, since it is larger than the sum of its proper divisors (126077).

2131123 is a wasteful number, since it uses less digits than its factorization.

2131123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781.

The product of its digits is 36, while the sum is 13.

The square root of 2131123 is about 1459.8366346958. The cubic root of 2131123 is about 128.6874431387.

Adding to 2131123 its reverse (3211312), we get a palindrome (5342435).

The spelling of 2131123 in words is "two million, one hundred thirty-one thousand, one hundred twenty-three".