1313033213 has 2 divisors, whose sum is σ = 1313033214. Its totient is φ = 1313033212.

The previous prime is 1313033207. The next prime is 1313033221. The reversal of 1313033213 is 3123303131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1293337369 + 19695844 = 35963^2 + 4438^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313033213 - 2¹² = 1313029117 is a prime.

It is a super-2 number, since 2×1313033213² = 3448112436882206738, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313093213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656516606 + 656516607.

It is an arithmetic number, because the mean of its divisors is an integer number (656516607).

Almost surely, 2^1313033213 is an apocalyptic number.

It is an amenable number.

1313033213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313033213 is an equidigital number, since it uses as much as digits as its factorization.

1313033213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 20.

The square root of 1313033213 is about 36235.8001567511. The cubic root of 1313033213 is about 1095.0280326150.

Adding to 1313033213 its reverse (3123303131), we get a palindrome (4436336344).

The spelling of 1313033213 in words is "one billion, three hundred thirteen million, thirty-three thousand, two hundred thirteen".