213404242133 has 4 divisors (see below), whose sum is σ = 213405849888. Its totient is φ = 213402634380.

The previous prime is 213404242111. The next prime is 213404242187. The reversal of 213404242133 is 331242404312.

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 not a de Polignac number, because 213404242133 - 2²² = 213400047829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213404242096 and 213404242105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213404242193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 584891 + ... + 876872.

It is an arithmetic number, because the mean of its divisors is an integer number (53351462472).

Almost surely, 2^213404242133 is an apocalyptic number.

It is an amenable number.

213404242133 is a deficient number, since it is larger than the sum of its proper divisors (1607755).

213404242133 is a wasteful number, since it uses less digits than its factorization.

213404242133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607754.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 213404242133 its reverse (331242404312), we get a palindrome (544646646445).

The spelling of 213404242133 in words is "two hundred thirteen billion, four hundred four million, two hundred forty-two thousand, one hundred thirty-three".