213446434 has 8 divisors (see below), whose sum is σ = 320284188. Its totient is φ = 106685040.

The previous prime is 213446393. The next prime is 213446447. The reversal of 213446434 is 434644312.

It can be written as a sum of positive squares in 2 ways, for example, as 208715809 + 4730625 = 14447^2 + 2175^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 213446396 and 213446405.

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, 11497 + ... + 23644.

Almost surely, 2^213446434 is an apocalyptic number.

213446434 is a deficient number, since it is larger than the sum of its proper divisors (106837754).

213446434 is a wasteful number, since it uses less digits than its factorization.

213446434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38180.

The product of its digits is 27648, while the sum is 31.

The square root of 213446434 is about 14609.8060904312. The cubic root of 213446434 is about 597.6262079410.

The spelling of 213446434 in words is "two hundred thirteen million, four hundred forty-six thousand, four hundred thirty-four".