1313220213 has 24 divisors (see below), whose sum is σ = 1993837248. Its totient is φ = 831285312.

The previous prime is 1313220193. The next prime is 1313220217. The reversal of 1313220213 is 3120223131.

1313220213 is a `hidden beast` number, since 131 + 322 + 0 + 213 = 666.

It is not a de Polignac number, because 1313220213 - 2⁶ = 1313220149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313220217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5206 + ... + 51512.

It is an arithmetic number, because the mean of its divisors is an integer number (83076552).

Almost surely, 2^1313220213 is an apocalyptic number.

It is an amenable number.

1313220213 is a deficient number, since it is larger than the sum of its proper divisors (680617035).

1313220213 is a wasteful number, since it uses less digits than its factorization.

1313220213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46473 (or 46470 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1313220213 is about 36238.3803859941. The cubic root of 1313220213 is about 1095.0800141693.

Adding to 1313220213 its reverse (3120223131), we get a palindrome (4433443344).

The spelling of 1313220213 in words is "one billion, three hundred thirteen million, two hundred twenty thousand, two hundred thirteen".