13451213 has 2 divisors, whose sum is σ = 13451214. Its totient is φ = 13451212.

The previous prime is 13451209. The next prime is 13451219. The reversal of 13451213 is 31215431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7628644 + 5822569 = 2762^2 + 2413^2 .

It is a cyclic number.

It is not a de Polignac number, because 13451213 - 2² = 13451209 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a plaindrome in base 7.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13451219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6725606 + 6725607.

It is an arithmetic number, because the mean of its divisors is an integer number (6725607).

Almost surely, 2^13451213 is an apocalyptic number.

It is an amenable number.

13451213 is a deficient number, since it is larger than the sum of its proper divisors (1).

13451213 is an equidigital number, since it uses as much as digits as its factorization.

13451213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 20.

The square root of 13451213 is about 3667.5895353761. The cubic root of 13451213 is about 237.8229799660.

Adding to 13451213 its reverse (31215431), we get a palindrome (44666644).

The spelling of 13451213 in words is "thirteen million, four hundred fifty-one thousand, two hundred thirteen".