423631330 has 16 divisors (see below), whose sum is σ = 807391800. Its totient is φ = 159484672.

The previous prime is 423631309. The next prime is 423631331. The reversal of 423631330 is 33136324.

It can be written as a sum of positive squares in 4 ways, for example, as 402443721 + 21187609 = 20061^2 + 4603^2 .

It is a junction number, because it is equal to n+sod(n) for n = 423631295 and 423631304.

It is not an unprimeable number, because it can be changed into a prime (423631331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1245805 + ... + 1246144.

Almost surely, 2^423631330 is an apocalyptic number.

423631330 is a deficient number, since it is larger than the sum of its proper divisors (383760470).

423631330 is a wasteful number, since it uses less digits than its factorization.

423631330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2491973.

The product of its (nonzero) digits is 3888, while the sum is 25.

The square root of 423631330 is about 20582.3062361826. The cubic root of 423631330 is about 751.0393471595.

Adding to 423631330 its reverse (33136324), we get a palindrome (456767654).

The spelling of 423631330 in words is "four hundred twenty-three million, six hundred thirty-one thousand, three hundred thirty".