213040304 has 20 divisors (see below), whose sum is σ = 419534160. Its totient is φ = 104773440.

The previous prime is 213040301. The next prime is 213040307. The reversal of 213040304 is 403040312.

213040304 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (213040301) and next prime (213040307).

It is a super-2 number, since 2×213040304² = 90772342256824832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213040301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108164 + ... + 110115.

It is an arithmetic number, because the mean of its divisors is an integer number (20976708).

Almost surely, 2^213040304 is an apocalyptic number.

It is an amenable number.

213040304 is a deficient number, since it is larger than the sum of its proper divisors (206493856).

213040304 is a wasteful number, since it uses less digits than its factorization.

213040304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218348 (or 218342 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 213040304 is about 14595.9002463020. The cubic root of 213040304 is about 597.2469277167.

Adding to 213040304 its reverse (403040312), we get a palindrome (616080616).

The spelling of 213040304 in words is "two hundred thirteen million, forty thousand, three hundred four".