406315321 has 8 divisors (see below), whose sum is σ = 412383744. Its totient is φ = 400256640.

The previous prime is 406315307. The next prime is 406315333. The reversal of 406315321 is 123513604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 406315321 - 2¹¹ = 406313273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406315381) 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, 155401 + ... + 157993.

It is an arithmetic number, because the mean of its divisors is an integer number (51547968).

Almost surely, 2^406315321 is an apocalyptic number.

It is an amenable number.

406315321 is a deficient number, since it is larger than the sum of its proper divisors (6068423).

406315321 is a wasteful number, since it uses less digits than its factorization.

406315321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4871.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 406315321 is about 20157.2647201946. The cubic root of 406315321 is about 740.6637099911.

Adding to 406315321 its reverse (123513604), we get a palindrome (529828925).

The spelling of 406315321 in words is "four hundred six million, three hundred fifteen thousand, three hundred twenty-one".