423501631 has 8 divisors (see below), whose sum is σ = 494300160. Its totient is φ = 355277688.

The previous prime is 423501629. The next prime is 423501643. The reversal of 423501631 is 136105324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 423501631 - 2¹ = 423501629 is a prime.

It is a super-2 number, since 2×423501631² = 358707262919320322, 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 = 423501596 and 423501605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423501601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643291 + ... + 643948.

It is an arithmetic number, because the mean of its divisors is an integer number (61787520).

Almost surely, 2^423501631 is an apocalyptic number.

423501631 is a deficient number, since it is larger than the sum of its proper divisors (70798529).

423501631 is a wasteful number, since it uses less digits than its factorization.

423501631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287293.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 423501631 is about 20579.1552547718. The cubic root of 423501631 is about 750.9626932484.

Adding to 423501631 its reverse (136105324), we get a palindrome (559606955).

The spelling of 423501631 in words is "four hundred twenty-three million, five hundred one thousand, six hundred thirty-one".