423120031 has 4 divisors (see below), whose sum is σ = 426164200. Its totient is φ = 420075864.

The previous prime is 423120017. The next prime is 423120067. The reversal of 423120031 is 130021324.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 423120031 - 2⁵ = 423119999 is a prime.

It is a super-2 number, since 2×423120031² = 358061121266881922, 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 = 423119987 and 423120014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423120331) 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, 1521876 + ... + 1522153.

It is an arithmetic number, because the mean of its divisors is an integer number (106541050).

Almost surely, 2^423120031 is an apocalyptic number.

423120031 is a deficient number, since it is larger than the sum of its proper divisors (3044169).

423120031 is a wasteful number, since it uses less digits than its factorization.

423120031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3044168.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 423120031 is about 20569.8816476906. The cubic root of 423120031 is about 750.7370715449.

Adding to 423120031 its reverse (130021324), we get a palindrome (553141355).

The spelling of 423120031 in words is "four hundred twenty-three million, one hundred twenty thousand, thirty-one".