213003434 has 48 divisors (see below), whose sum is σ = 384633600. Its totient is φ = 86643648.

The previous prime is 213003409. The next prime is 213003451. The reversal of 213003434 is 434300312.

213003434 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 930032 + ... + 930260.

It is an arithmetic number, because the mean of its divisors is an integer number (8013200).

Almost surely, 2^213003434 is an apocalyptic number.

213003434 is a deficient number, since it is larger than the sum of its proper divisors (171630166).

213003434 is a wasteful number, since it uses less digits than its factorization.

213003434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 213003434 is about 14594.6371657537. The cubic root of 213003434 is about 597.2124713811.

Adding to 213003434 its reverse (434300312), we get a palindrome (647303746).

The spelling of 213003434 in words is "two hundred thirteen million, three thousand, four hundred thirty-four".