13031449 has 4 divisors (see below), whose sum is σ = 13210036. Its totient is φ = 12852864.

The previous prime is 13031443. The next prime is 13031461. The reversal of 13031449 is 94413031.

It is a happy number.

13031449 is digitally balanced in base 3, 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: 94413031 = 71 ⋅1329761.

It can be written as a sum of positive squares in 2 ways, for example, as 9809424 + 3222025 = 3132^2 + 1795^2 .

It is a cyclic number.

It is not a de Polignac number, because 13031449 - 2³ = 13031441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13031441) 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, 89184 + ... + 89329.

It is an arithmetic number, because the mean of its divisors is an integer number (3302509).

Almost surely, 2^13031449 is an apocalyptic number.

It is an amenable number.

13031449 is a deficient number, since it is larger than the sum of its proper divisors (178587).

13031449 is an equidigital number, since it uses as much as digits as its factorization.

13031449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178586.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 13031449 is about 3609.9098326690. The cubic root of 13031449 is about 235.3229240920.

It can be divided in two parts, 130 and 31449, that multiplied together give a triangular number (4088370 = T₂₈₅₉).

The spelling of 13031449 in words is "thirteen million, thirty-one thousand, four hundred forty-nine".