213243414 has 16 divisors (see below), whose sum is σ = 429846528. Its totient is φ = 70521192.

The previous prime is 213243413. The next prime is 213243449. The reversal of 213243414 is 414342312.

It is a super-2 number, since 2×213243414² = 90945507228750792, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213243413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139162 + ... + 140685.

It is an arithmetic number, because the mean of its divisors is an integer number (26865408).

Almost surely, 2^213243414 is an apocalyptic number.

213243414 is an abundant number, since it is smaller than the sum of its proper divisors (216603114).

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

213243414 is a wasteful number, since it uses less digits than its factorization.

213243414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279979.

The product of its digits is 2304, while the sum is 24.

The square root of 213243414 is about 14602.8563644241. The cubic root of 213243414 is about 597.4366700500.

Adding to 213243414 its reverse (414342312), we get a palindrome (627585726).

The spelling of 213243414 in words is "two hundred thirteen million, two hundred forty-three thousand, four hundred fourteen".