1313333213 has 2 divisors, whose sum is σ = 1313333214. Its totient is φ = 1313333212.

The previous prime is 1313333201. The next prime is 1313333239. The reversal of 1313333213 is 3123333131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1305593689 + 7739524 = 36133^2 + 2782^2 .

It is an emirp because it is prime and its reverse (3123333131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1313333213 - 2¹² = 1313329117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313303213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656666606 + 656666607.

It is an arithmetic number, because the mean of its divisors is an integer number (656666607).

Almost surely, 2^1313333213 is an apocalyptic number.

It is an amenable number.

1313333213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313333213 is an equidigital number, since it uses as much as digits as its factorization.

1313333213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1458, while the sum is 23.

The square root of 1313333213 is about 36239.9394729075. The cubic root of 1313333213 is about 1095.1114230910. Note that the first 3 decimals are identical.

Adding to 1313333213 its reverse (3123333131), we get a palindrome (4436666344).

The spelling of 1313333213 in words is "one billion, three hundred thirteen million, three hundred thirty-three thousand, two hundred thirteen".