424631 has 4 divisors (see below), whose sum is σ = 447000. Its totient is φ = 402264.

The previous prime is 424601. The next prime is 424639. The reversal of 424631 is 136424.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424631 is a prime.

It is a super-2 number, since 2×424631² = 360622972322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424639) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11156 + ... + 11193.

It is an arithmetic number, because the mean of its divisors is an integer number (111750).

2⁴²⁴⁶³¹ is an apocalyptic number.

424631 is a deficient number, since it is larger than the sum of its proper divisors (22369).

424631 is a wasteful number, since it uses less digits than its factorization.

424631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22368.

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

The square root of 424631 is about 651.6371689829. The cubic root of 424631 is about 75.1629641645.

The spelling of 424631 in words is "four hundred twenty-four thousand, six hundred thirty-one".