213139411 has 4 divisors (see below), whose sum is σ = 213988824. Its totient is φ = 212290000.

The previous prime is 213139349. The next prime is 213139439. The reversal of 213139411 is 114931312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213139411 - 2⁹ = 213138899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213139441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424330 + ... + 424831.

It is an arithmetic number, because the mean of its divisors is an integer number (53497206).

Almost surely, 2^213139411 is an apocalyptic number.

213139411 is a deficient number, since it is larger than the sum of its proper divisors (849413).

213139411 is an equidigital number, since it uses as much as digits as its factorization.

213139411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849412.

The product of its digits is 648, while the sum is 25.

The square root of 213139411 is about 14599.2948802331. The cubic root of 213139411 is about 597.3395270573.

The spelling of 213139411 in words is "two hundred thirteen million, one hundred thirty-nine thousand, four hundred eleven".