13213333 has 4 divisors (see below), whose sum is σ = 15100960. Its totient is φ = 11325708.

The previous prime is 13213331. The next prime is 13213363. The reversal of 13213333 is 33331231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33331231 = 31 ⋅1075201.

It is a cyclic number.

It is not a de Polignac number, because 13213333 - 2¹ = 13213331 is a prime.

It is a super-3 number, since 3×13213333³ (a number of 22 digits) contains 333 as substring.

13213333 is a modest number, since divided by 3333 gives 1321 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 13213333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13213331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 943803 + ... + 943816.

It is an arithmetic number, because the mean of its divisors is an integer number (3775240).

Almost surely, 2^13213333 is an apocalyptic number.

It is an amenable number.

13213333 is a deficient number, since it is larger than the sum of its proper divisors (1887627).

13213333 is an equidigital number, since it uses as much as digits as its factorization.

13213333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887626.

The product of its digits is 486, while the sum is 19.

The square root of 13213333 is about 3635.0148555405. The cubic root of 13213333 is about 236.4126947793.

Adding to 13213333 its reverse (33331231), we get a palindrome (46544564).

The spelling of 13213333 in words is "thirteen million, two hundred thirteen thousand, three hundred thirty-three".