420431312 has 40 divisors (see below), whose sum is σ = 939523200. Its totient is φ = 178526592.

The previous prime is 420431287. The next prime is 420431359. The reversal of 420431312 is 213134024.

It is a super-2 number, since 2×420431312² = 353524976220082688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5012 + ... + 29427.

It is an arithmetic number, because the mean of its divisors is an integer number (23488080).

Almost surely, 2^420431312 is an apocalyptic number.

It is an amenable number.

420431312 is an abundant number, since it is smaller than the sum of its proper divisors (519091888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420431312 is a wasteful number, since it uses less digits than its factorization.

420431312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34563 (or 34557 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 420431312 is about 20504.4217670238. The cubic root of 420431312 is about 749.1435034424.

Adding to 420431312 its reverse (213134024), we get a palindrome (633565336).

The spelling of 420431312 in words is "four hundred twenty million, four hundred thirty-one thousand, three hundred twelve".