420303031 has 4 divisors (see below), whose sum is σ = 426222864. Its totient is φ = 414383200.

The previous prime is 420303029. The next prime is 420303043. The reversal of 420303031 is 130303024.

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 420303031 - 2¹ = 420303029 is a prime.

It is a super-2 number, since 2×420303031² = 353309275735573922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420302996 and 420303014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420303431) 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, 2959810 + ... + 2959951.

It is an arithmetic number, because the mean of its divisors is an integer number (106555716).

Almost surely, 2^420303031 is an apocalyptic number.

420303031 is a deficient number, since it is larger than the sum of its proper divisors (5919833).

420303031 is an equidigital number, since it uses as much as digits as its factorization.

420303031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5919832.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 420303031 is about 20501.2933982225. The cubic root of 420303031 is about 749.0673033984.

Adding to 420303031 its reverse (130303024), we get a palindrome (550606055).

The spelling of 420303031 in words is "four hundred twenty million, three hundred three thousand, thirty-one".