2131775 has 12 divisors (see below), whose sum is σ = 2682864. Its totient is φ = 1680000.

The previous prime is 2131771. The next prime is 2131793. The reversal of 2131775 is 5771312.

2131775 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2131775 - 2² = 2131771 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1175 + ... + 2375.

It is an arithmetic number, because the mean of its divisors is an integer number (223572).

2^2131775 is an apocalyptic number.

2131775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2131775 is a deficient number, since it is larger than the sum of its proper divisors (551089).

2131775 is a wasteful number, since it uses less digits than its factorization.

2131775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282 (or 1277 counting only the distinct ones).

The product of its digits is 1470, while the sum is 26.

The square root of 2131775 is about 1460.0599302768. The cubic root of 2131775 is about 128.7005654311.

The spelling of 2131775 in words is "two million, one hundred thirty-one thousand, seven hundred seventy-five".