424401231 has 4 divisors (see below), whose sum is σ = 565868312. Its totient is φ = 282934152.

The previous prime is 424401227. The next prime is 424401239. The reversal of 424401231 is 132104424.

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

It is not a de Polignac number, because 424401231 - 2² = 424401227 is a prime.

It is a super-2 number, since 2×424401231² = 360232809748630722, 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 = 424401198 and 424401207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424401239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70733536 + ... + 70733541.

It is an arithmetic number, because the mean of its divisors is an integer number (141467078).

Almost surely, 2^424401231 is an apocalyptic number.

424401231 is a deficient number, since it is larger than the sum of its proper divisors (141467081).

424401231 is a wasteful number, since it uses less digits than its factorization.

424401231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141467080.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 424401231 is about 20601.0007281200. Note that the first 3 decimals coincide. The cubic root of 424401231 is about 751.4940475640.

Adding to 424401231 its reverse (132104424), we get a palindrome (556505655).

The spelling of 424401231 in words is "four hundred twenty-four million, four hundred one thousand, two hundred thirty-one".