1310813 has 8 divisors (see below), whose sum is σ = 1507200. Its totient is φ = 1116720.

The previous prime is 1310809. The next prime is 1310851. The reversal of 1310813 is 3180131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1310813 - 2² = 1310809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1310791 and 1310800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 923 + ... + 1863.

It is an arithmetic number, because the mean of its divisors is an integer number (188400).

2^1310813 is an apocalyptic number.

It is an amenable number.

1310813 is a deficient number, since it is larger than the sum of its proper divisors (196387).

1310813 is an equidigital number, since it uses as much as digits as its factorization.

1310813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1310813 is about 1144.9074198380. The cubic root of 1310813 is about 109.4410488686.

Adding to 1310813 its reverse (3180131), we get a palindrome (4490944).

The spelling of 1310813 in words is "one million, three hundred ten thousand, eight hundred thirteen".