3031649 has 4 divisors (see below), whose sum is σ = 3035136. Its totient is φ = 3028164.

The previous prime is 3031619. The next prime is 3031657. The reversal of 3031649 is 9461303.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9461303 = 23 ⋅411361.

It is a cyclic number.

It is not a de Polignac number, because 3031649 - 2¹⁶ = 2966113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3031619) 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, 752 + ... + 2574.

It is an arithmetic number, because the mean of its divisors is an integer number (758784).

Almost surely, 2^3031649 is an apocalyptic number.

It is an amenable number.

3031649 is a deficient number, since it is larger than the sum of its proper divisors (3487).

3031649 is a wasteful number, since it uses less digits than its factorization.

3031649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3486.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 3031649 is about 1741.1631169997. The cubic root of 3031649 is about 144.7303589754.

The spelling of 3031649 in words is "three million, thirty-one thousand, six hundred forty-nine".