2131449 has 4 divisors (see below), whose sum is σ = 2841936. Its totient is φ = 1420964.

The previous prime is 2131447. The next prime is 2131457. The reversal of 2131449 is 9441312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2131449 - 2¹ = 2131447 is a prime.

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2131447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355239 + ... + 355244.

It is an arithmetic number, because the mean of its divisors is an integer number (710484).

2^2131449 is an apocalyptic number.

It is an amenable number.

2131449 is a deficient number, since it is larger than the sum of its proper divisors (710487).

2131449 is an equidigital number, since it uses as much as digits as its factorization.

2131449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710486.

The product of its digits is 864, while the sum is 24.

The square root of 2131449 is about 1459.9482867554. The cubic root of 2131449 is about 128.6940046194.

The spelling of 2131449 in words is "two million, one hundred thirty-one thousand, four hundred forty-nine".