1310240213 has 4 divisors (see below), whose sum is σ = 1355420940. Its totient is φ = 1265059488.

The previous prime is 1310240179. The next prime is 1310240219. The reversal of 1310240213 is 3120420131.

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 456548689 + 853691524 = 21367^2 + 29218^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310240213 - 2¹⁸ = 1309978069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1310240191 and 1310240200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310240219) 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, 22590320 + ... + 22590377.

It is an arithmetic number, because the mean of its divisors is an integer number (338855235).

Almost surely, 2^1310240213 is an apocalyptic number.

It is an amenable number.

1310240213 is a deficient number, since it is larger than the sum of its proper divisors (45180727).

1310240213 is an equidigital number, since it uses as much as digits as its factorization.

1310240213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45180726.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1310240213 is about 36197.2404058652. The cubic root of 1310240213 is about 1094.2510569872.

Adding to 1310240213 its reverse (3120420131), we get a palindrome (4430660344).

The spelling of 1310240213 in words is "one billion, three hundred ten million, two hundred forty thousand, two hundred thirteen".