213040326 has 16 divisors (see below), whose sum is σ = 426844224. Its totient is φ = 70886184.

The previous prime is 213040319. The next prime is 213040357. The reversal of 213040326 is 623040312.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28156 + ... + 34911.

It is an arithmetic number, because the mean of its divisors is an integer number (26677764).

Almost surely, 2^213040326 is an apocalyptic number.

213040326 is an abundant number, since it is smaller than the sum of its proper divisors (213803898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213040326 is a wasteful number, since it uses less digits than its factorization.

213040326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63635.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 213040326 is about 14595.9009999383. The cubic root of 213040326 is about 597.2469482753.

Adding to 213040326 its reverse (623040312), we get a palindrome (836080638).

The spelling of 213040326 in words is "two hundred thirteen million, forty thousand, three hundred twenty-six".