2131375 has 24 divisors (see below), whose sum is σ = 2873520. Its totient is φ = 1577600.

The previous prime is 2131373. The next prime is 2131399. The reversal of 2131375 is 5731312.

It is not a de Polignac number, because 2131375 - 2¹ = 2131373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131373) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36096 + ... + 36154.

It is an arithmetic number, because the mean of its divisors is an integer number (119730).

2^2131375 is an apocalyptic number.

2131375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2131375 is a deficient number, since it is larger than the sum of its proper divisors (742145).

2131375 is an equidigital number, since it uses as much as digits as its factorization.

2131375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 81 counting only the distinct ones).

The product of its digits is 630, while the sum is 22.

The square root of 2131375 is about 1459.9229431720. The cubic root of 2131375 is about 128.6925152622.

Adding to 2131375 its reverse (5731312), we get a palindrome (7862687).

The spelling of 2131375 in words is "two million, one hundred thirty-one thousand, three hundred seventy-five".