213413405 has 8 divisors (see below), whose sum is σ = 262342584. Its totient is φ = 166566400.

The previous prime is 213413401. The next prime is 213413419. The reversal of 213413405 is 504314312.

It can be written as a sum of positive squares in 4 ways, for example, as 22448644 + 190964761 = 4738^2 + 13819^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213413405 - 2² = 213413401 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 (213413401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520316 + ... + 520725.

It is an arithmetic number, because the mean of its divisors is an integer number (32792823).

Almost surely, 2^213413405 is an apocalyptic number.

It is an amenable number.

213413405 is a deficient number, since it is larger than the sum of its proper divisors (48929179).

213413405 is a wasteful number, since it uses less digits than its factorization.

213413405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041087.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 213413405 is about 14608.6756757757. The cubic root of 213413405 is about 597.5953805122.

Adding to 213413405 its reverse (504314312), we get a palindrome (717727717).

The spelling of 213413405 in words is "two hundred thirteen million, four hundred thirteen thousand, four hundred five".