213511112134 has 4 divisors (see below), whose sum is σ = 320266668204. Its totient is φ = 106755556066.

The previous prime is 213511112123. The next prime is 213511112149. The reversal of 213511112134 is 431211115312.

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

It is a junction number, because it is equal to n+sod(n) for n = 213511112099 and 213511112108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53377778032 + ... + 53377778035.

It is an arithmetic number, because the mean of its divisors is an integer number (80066667051).

Almost surely, 2^213511112134 is an apocalyptic number.

213511112134 is a deficient number, since it is larger than the sum of its proper divisors (106755556070).

213511112134 is a wasteful number, since it uses less digits than its factorization.

213511112134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106755556069.

The product of its digits is 720, while the sum is 25.

Adding to 213511112134 its reverse (431211115312), we get a palindrome (644722227446).

The spelling of 213511112134 in words is "two hundred thirteen billion, five hundred eleven million, one hundred twelve thousand, one hundred thirty-four".