424220331 has 4 divisors (see below), whose sum is σ = 565627112. Its totient is φ = 282813552.

The previous prime is 424220309. The next prime is 424220333. The reversal of 424220331 is 133022424.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 424220331 - 2⁶ = 424220267 is a prime.

It is a super-2 number, since 2×424220331² = 359925778467499122, 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 = 424220298 and 424220307.

It is not an unprimeable number, because it can be changed into a prime (424220333) 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, 70703386 + ... + 70703391.

It is an arithmetic number, because the mean of its divisors is an integer number (141406778).

Almost surely, 2^424220331 is an apocalyptic number.

424220331 is a deficient number, since it is larger than the sum of its proper divisors (141406781).

424220331 is a wasteful number, since it uses less digits than its factorization.

424220331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141406780.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 424220331 is about 20596.6096967438. The cubic root of 424220331 is about 751.3872582152.

Adding to 424220331 its reverse (133022424), we get a palindrome (557242755).

The spelling of 424220331 in words is "four hundred twenty-four million, two hundred twenty thousand, three hundred thirty-one".