2431649 has 4 divisors (see below), whose sum is σ = 2652720. Its totient is φ = 2210580.

The previous prime is 2431633. The next prime is 2431657. The reversal of 2431649 is 9461342.

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 2431649 - 2⁴ = 2431633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2431049) 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, 110519 + ... + 110540.

It is an arithmetic number, because the mean of its divisors is an integer number (663180).

2^2431649 is an apocalyptic number.

It is an amenable number.

2431649 is a deficient number, since it is larger than the sum of its proper divisors (221071).

2431649 is a wasteful number, since it uses less digits than its factorization.

2431649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221070.

The product of its digits is 5184, while the sum is 29.

The square root of 2431649 is about 1559.3745541082. The cubic root of 2431649 is about 134.4725463699.

The spelling of 2431649 in words is "two million, four hundred thirty-one thousand, six hundred forty-nine".