3231649 has 4 divisors (see below), whose sum is σ = 3421764. Its totient is φ = 3041536.

The previous prime is 3231643. The next prime is 3231667. The reversal of 3231649 is 9461323.

3231649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9461323 = 89 ⋅106307.

It can be written as a sum of positive squares in 2 ways, for example, as 3038049 + 193600 = 1743^2 + 440^2 .

It is a cyclic number.

It is not a de Polignac number, because 3231649 - 2⁷ = 3231521 is a prime.

It is a Duffinian number.

3231649 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3231643) 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 3 ways as a sum of consecutive naturals, for example, 95032 + ... + 95065.

It is an arithmetic number, because the mean of its divisors is an integer number (855441).

Almost surely, 2^3231649 is an apocalyptic number.

It is an amenable number.

3231649 is a deficient number, since it is larger than the sum of its proper divisors (190115).

3231649 is a wasteful number, since it uses less digits than its factorization.

3231649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190114.

The product of its digits is 3888, while the sum is 28.

The square root of 3231649 is about 1797.6787810952. The cubic root of 3231649 is about 147.8454833671.

The spelling of 3231649 in words is "three million, two hundred thirty-one thousand, six hundred forty-nine".