13405213 has 4 divisors (see below), whose sum is σ = 13632480. Its totient is φ = 13177948.

The previous prime is 13405187. The next prime is 13405219. The reversal of 13405213 is 31250431.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13405213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13405219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113545 + ... + 113662.

It is an arithmetic number, because the mean of its divisors is an integer number (3408120).

Almost surely, 2^13405213 is an apocalyptic number.

It is an amenable number.

13405213 is a deficient number, since it is larger than the sum of its proper divisors (227267).

13405213 is an equidigital number, since it uses as much as digits as its factorization.

13405213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227266.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13405213 is about 3661.3130158455. The cubic root of 13405213 is about 237.5515707033.

Adding to 13405213 its reverse (31250431), we get a palindrome (44655644).

The spelling of 13405213 in words is "thirteen million, four hundred five thousand, two hundred thirteen".