213524434 has 8 divisors (see below), whose sum is σ = 321111180. Its totient is φ = 106487376.

The previous prime is 213524429. The next prime is 213524449. The reversal of 213524434 is 434425312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 201725209 + 11799225 = 14203^2 + 3435^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136449 + ... + 138004.

Almost surely, 2^213524434 is an apocalyptic number.

213524434 is a deficient number, since it is larger than the sum of its proper divisors (107586746).

213524434 is a wasteful number, since it uses less digits than its factorization.

213524434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274844.

The product of its digits is 11520, while the sum is 28.

The square root of 213524434 is about 14612.4752865488. The cubic root of 213524434 is about 597.6989961754.

Adding to 213524434 its reverse (434425312), we get a palindrome (647949746).

It can be divided in two parts, 2135 and 24434, that added together give a square (26569 = 163²).

The spelling of 213524434 in words is "two hundred thirteen million, five hundred twenty-four thousand, four hundred thirty-four".