406215343 has 4 divisors (see below), whose sum is σ = 406450408. Its totient is φ = 405980280.

The previous prime is 406215311. The next prime is 406215347. The reversal of 406215343 is 343512604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 406215343 - 2⁵ = 406215311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406215347) 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, 114921 + ... + 118402.

It is an arithmetic number, because the mean of its divisors is an integer number (101612602).

Almost surely, 2^406215343 is an apocalyptic number.

406215343 is a deficient number, since it is larger than the sum of its proper divisors (235065).

406215343 is a wasteful number, since it uses less digits than its factorization.

406215343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235064.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 406215343 is about 20154.7846180504. The cubic root of 406215343 is about 740.6029557386.

Adding to 406215343 its reverse (343512604), we get a palindrome (749727947).

The spelling of 406215343 in words is "four hundred six million, two hundred fifteen thousand, three hundred forty-three".