1313032409 has 4 divisors (see below), whose sum is σ = 1414034916. Its totient is φ = 1212029904.

The previous prime is 1313032403. The next prime is 1313032423. The reversal of 1313032409 is 9042303131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9042303131 = 3511 ⋅2575421.

It can be written as a sum of positive squares in 2 ways, for example, as 105678400 + 1207354009 = 10280^2 + 34747^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313032409 - 2⁸ = 1313032153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313032403) 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, 50501234 + ... + 50501259.

It is an arithmetic number, because the mean of its divisors is an integer number (353508729).

Almost surely, 2^1313032409 is an apocalyptic number.

It is an amenable number.

1313032409 is a deficient number, since it is larger than the sum of its proper divisors (101002507).

1313032409 is a wasteful number, since it uses less digits than its factorization.

1313032409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101002506.

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

The square root of 1313032409 is about 36235.7890627484. The cubic root of 1313032409 is about 1095.0278091114.

The spelling of 1313032409 in words is "one billion, three hundred thirteen million, thirty-two thousand, four hundred nine".