1210313213 has 4 divisors (see below), whose sum is σ = 1210633788. Its totient is φ = 1209992640.

The previous prime is 1210313207. The next prime is 1210313257. The reversal of 1210313213 is 3123130121.

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 1001279449 + 209033764 = 31643^2 + 14458^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210313213 - 2⁶ = 1210313149 is a prime.

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 = 1210313191 and 1210313200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215313213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154556 + ... + 162197.

It is an arithmetic number, because the mean of its divisors is an integer number (302658447).

Almost surely, 2^1210313213 is an apocalyptic number.

It is an amenable number.

1210313213 is a deficient number, since it is larger than the sum of its proper divisors (320575).

1210313213 is an equidigital number, since it uses as much as digits as its factorization.

1210313213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320574.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1210313213 is about 34789.5560908730. The cubic root of 1210313213 is about 1065.6941738683.

Adding to 1210313213 its reverse (3123130121), we get a palindrome (4333443334).

The spelling of 1210313213 in words is "one billion, two hundred ten million, three hundred thirteen thousand, two hundred thirteen".