2131125 has 16 divisors (see below), whose sum is σ = 3546816. Its totient is φ = 1136400.

The previous prime is 2131109. The next prime is 2131127. The reversal of 2131125 is 5211312.

It is not a de Polignac number, because 2131125 - 2⁴ = 2131109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 2467 + ... + 3216.

It is an arithmetic number, because the mean of its divisors is an integer number (221676).

2^2131125 is an apocalyptic number.

2131125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2131125 is a deficient number, since it is larger than the sum of its proper divisors (1415691).

2131125 is an equidigital number, since it uses as much as digits as its factorization.

2131125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5701 (or 5691 counting only the distinct ones).

The product of its digits is 60, while the sum is 15.

The square root of 2131125 is about 1459.8373197038. The cubic root of 2131125 is about 128.6874833952.

Adding to 2131125 its reverse (5211312), we get a palindrome (7342437).

The spelling of 2131125 in words is "two million, one hundred thirty-one thousand, one hundred twenty-five".