1431009 has 24 divisors (see below), whose sum is σ = 2246400. Its totient is φ = 874368.

The previous prime is 1431007. The next prime is 1431013. The reversal of 1431009 is 9001341.

It is not a de Polignac number, because 1431009 - 2¹ = 1431007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1430982 and 1431000.

It is not an unprimeable number, because it can be changed into a prime (1431007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7092 + ... + 7290.

It is an arithmetic number, because the mean of its divisors is an integer number (93600).

2^1431009 is an apocalyptic number.

It is an amenable number.

1431009 is a deficient number, since it is larger than the sum of its proper divisors (815391).

1431009 is a wasteful number, since it uses less digits than its factorization.

1431009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269 (or 266 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1431009 is about 1196.2478840107. The cubic root of 1431009 is about 112.6888088705.

The spelling of 1431009 in words is "one million, four hundred thirty-one thousand, nine".