213144442134 has 32 divisors (see below), whose sum is σ = 479040355584. Its totient is φ = 62731474080.

The previous prime is 213144442129. The next prime is 213144442183. The reversal of 213144442134 is 431244441312.

It is a happy number.

It is a super-2 number, since 2×213144442134² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213144442095 and 213144442104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59403012 + ... + 59406599.

It is an arithmetic number, because the mean of its divisors is an integer number (14970011112).

Almost surely, 2^213144442134 is an apocalyptic number.

213144442134 is an abundant number, since it is smaller than the sum of its proper divisors (265895913450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213144442134 is a wasteful number, since it uses less digits than its factorization.

213144442134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118809652.

The product of its digits is 36864, while the sum is 33.

Adding to 213144442134 its reverse (431244441312), we get a palindrome (644388883446).

The spelling of 213144442134 in words is "two hundred thirteen billion, one hundred forty-four million, four hundred forty-two thousand, one hundred thirty-four".