420013331 has 4 divisors (see below), whose sum is σ = 420054432. Its totient is φ = 419972232.

The previous prime is 420013313. The next prime is 420013337. The reversal of 420013331 is 133310024.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 420013331 - 2⁶ = 420013267 is a prime.

It is a super-2 number, since 2×420013331² = 352822396435431122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420013337) 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, 8006 + ... + 30068.

It is an arithmetic number, because the mean of its divisors is an integer number (105013608).

Almost surely, 2^420013331 is an apocalyptic number.

420013331 is a deficient number, since it is larger than the sum of its proper divisors (41101).

420013331 is a wasteful number, since it uses less digits than its factorization.

420013331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41100.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 420013331 is about 20494.2267724352. The cubic root of 420013331 is about 748.8951619839.

Adding to 420013331 its reverse (133310024), we get a palindrome (553323355).

The spelling of 420013331 in words is "four hundred twenty million, thirteen thousand, three hundred thirty-one".