1431541409 has 4 divisors (see below), whose sum is σ = 1438958916. Its totient is φ = 1424123904.

The previous prime is 1431541403. The next prime is 1431541411. The reversal of 1431541409 is 9041451341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9041451341 = 13 ⋅695496257.

It can be written as a sum of positive squares in 2 ways, for example, as 805140625 + 626400784 = 28375^2 + 25028^2 .

It is a cyclic number.

It is not a de Polignac number, because 1431541409 - 2⁴ = 1431541393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1431541403) 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, 3708464 + ... + 3708849.

It is an arithmetic number, because the mean of its divisors is an integer number (359739729).

Almost surely, 2^1431541409 is an apocalyptic number.

It is an amenable number.

1431541409 is a deficient number, since it is larger than the sum of its proper divisors (7417507).

1431541409 is an equidigital number, since it uses as much as digits as its factorization.

1431541409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7417506.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1431541409 is about 37835.7160497856. The cubic root of 1431541409 is about 1127.0278248331.

The spelling of 1431541409 in words is "one billion, four hundred thirty-one million, five hundred forty-one thousand, four hundred nine".