213143134 has 4 divisors (see below), whose sum is σ = 319714704. Its totient is φ = 106571566.

The previous prime is 213143123. The next prime is 213143149. The reversal of 213143134 is 431341312.

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

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, 53285782 + ... + 53285785.

It is an arithmetic number, because the mean of its divisors is an integer number (79928676).

Almost surely, 2^213143134 is an apocalyptic number.

213143134 is a deficient number, since it is larger than the sum of its proper divisors (106571570).

213143134 is a wasteful number, since it uses less digits than its factorization.

213143134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106571569.

The product of its digits is 864, while the sum is 22.

The square root of 213143134 is about 14599.4223858343. The cubic root of 213143134 is about 597.3430050346.

Adding to 213143134 its reverse (431341312), we get a palindrome (644484446).

The spelling of 213143134 in words is "two hundred thirteen million, one hundred forty-three thousand, one hundred thirty-four".