213340436 has 12 divisors (see below), whose sum is σ = 392995680. Its totient is φ = 101055960.

The previous prime is 213340427. The next prime is 213340447. The reversal of 213340436 is 634043312.

It is a happy number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 1403480 + ... + 1403631.

It is an arithmetic number, because the mean of its divisors is an integer number (32749640).

Almost surely, 2^213340436 is an apocalyptic number.

It is an amenable number.

213340436 is a deficient number, since it is larger than the sum of its proper divisors (179655244).

213340436 is a wasteful number, since it uses less digits than its factorization.

213340436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2807134 (or 2807132 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 213340436 is about 14606.1780079527. The cubic root of 213340436 is about 597.5272640349.

Adding to 213340436 its reverse (634043312), we get a palindrome (847383748).

The spelling of 213340436 in words is "two hundred thirteen million, three hundred forty thousand, four hundred thirty-six".