1310009 has 4 divisors (see below), whose sum is σ = 1321716. Its totient is φ = 1298304.

The previous prime is 1309999. The next prime is 1310033. The reversal of 1310009 is 9000131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 595984 + 714025 = 772^2 + 845^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310009 - 2⁸ = 1309753 is a prime.

It is a super-2 number, since 2×1310009² = 3432247160162, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1309975 and 1310002.

It is not an unprimeable number, because it can be changed into a prime (1310039) 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, 5684 + ... + 5909.

It is an arithmetic number, because the mean of its divisors is an integer number (330429).

2^1310009 is an apocalyptic number.

It is an amenable number.

1310009 is a deficient number, since it is larger than the sum of its proper divisors (11707).

1310009 is a wasteful number, since it uses less digits than its factorization.

1310009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11706.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 1310009 is about 1144.5562458875. The cubic root of 1310009 is about 109.4186687123.

The spelling of 1310009 in words is "one million, three hundred ten thousand, nine".