420430331 has 8 divisors (see below), whose sum is σ = 424842000. Its totient is φ = 416028960.

The previous prime is 420430327. The next prime is 420430343. The reversal of 420430331 is 133034024.

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 420430331 - 2² = 420430327 is a prime.

It is a super-2 number, since 2×420430331² = 353523326449539122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420430321) 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, 100520 + ... + 104618.

It is an arithmetic number, because the mean of its divisors is an integer number (53105250).

Almost surely, 2^420430331 is an apocalyptic number.

420430331 is a deficient number, since it is larger than the sum of its proper divisors (4411669).

420430331 is a wasteful number, since it uses less digits than its factorization.

420430331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5149.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 420430331 is about 20504.3978453404. The cubic root of 420430331 is about 749.1429207786.

Adding to 420430331 its reverse (133034024), we get a palindrome (553464355).

The spelling of 420430331 in words is "four hundred twenty million, four hundred thirty thousand, three hundred thirty-one".