213432134 has 16 divisors (see below), whose sum is σ = 341839872. Its totient is φ = 99701448.

The previous prime is 213432119. The next prime is 213432221. The reversal of 213432134 is 431234312.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51974 + ... + 55929.

It is an arithmetic number, because the mean of its divisors is an integer number (21364992).

Almost surely, 2^213432134 is an apocalyptic number.

213432134 is a deficient number, since it is larger than the sum of its proper divisors (128407738).

213432134 is a wasteful number, since it uses less digits than its factorization.

213432134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107971.

The product of its digits is 1728, while the sum is 23.

The square root of 213432134 is about 14609.3166849104. The cubic root of 213432134 is about 597.6128615080.

Adding to 213432134 its reverse (431234312), we get a palindrome (644666446).

The spelling of 213432134 in words is "two hundred thirteen million, four hundred thirty-two thousand, one hundred thirty-four".