213131134 has 8 divisors (see below), whose sum is σ = 327131640. Its totient is φ = 104087256.

The previous prime is 213131131. The next prime is 213131141. The reversal of 213131134 is 431131312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×213131134⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213131131) 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, 1239049 + ... + 1239220.

It is an arithmetic number, because the mean of its divisors is an integer number (40891455).

Almost surely, 2^213131134 is an apocalyptic number.

213131134 is a deficient number, since it is larger than the sum of its proper divisors (114000506).

213131134 is a wasteful number, since it uses less digits than its factorization.

213131134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2478314.

The product of its digits is 216, while the sum is 19.

The square root of 213131134 is about 14599.0114048863. The cubic root of 213131134 is about 597.3317946483.

Adding to 213131134 its reverse (431131312), we get a palindrome (644262446).

The spelling of 213131134 in words is "two hundred thirteen million, one hundred thirty-one thousand, one hundred thirty-four".