213111340134 has 64 divisors (see below), whose sum is σ = 534363402240. Its totient is φ = 55044335520.

The previous prime is 213111340133. The next prime is 213111340153. The reversal of 213111340134 is 431043111312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213111340133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1205794 + ... + 1371189.

It is an arithmetic number, because the mean of its divisors is an integer number (8349428160).

Almost surely, 2^213111340134 is an apocalyptic number.

213111340134 is an abundant number, since it is smaller than the sum of its proper divisors (321252062106).

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

213111340134 is a wasteful number, since it uses less digits than its factorization.

213111340134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577185.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 213111340134 its reverse (431043111312), we get a palindrome (644154451446).

The spelling of 213111340134 in words is "two hundred thirteen billion, one hundred eleven million, three hundred forty thousand, one hundred thirty-four".