420331315 has 4 divisors (see below), whose sum is σ = 504397584. Its totient is φ = 336265048.

The previous prime is 420331291. The next prime is 420331333. The reversal of 420331315 is 513133024.

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 420331315 - 2⁵ = 420331283 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42033127 + ... + 42033136.

It is an arithmetic number, because the mean of its divisors is an integer number (126099396).

Almost surely, 2^420331315 is an apocalyptic number.

420331315 is a deficient number, since it is larger than the sum of its proper divisors (84066269).

420331315 is an equidigital number, since it uses as much as digits as its factorization.

420331315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84066268.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 420331315 is about 20501.9831967544. The cubic root of 420331315 is about 749.0841056758.

Adding to 420331315 its reverse (513133024), we get a palindrome (933464339).

The spelling of 420331315 in words is "four hundred twenty million, three hundred thirty-one thousand, three hundred fifteen".