423544031 has 4 divisors (see below), whose sum is σ = 424327464. Its totient is φ = 422760600.

The previous prime is 423544027. The next prime is 423544049. The reversal of 423544031 is 130445324.

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 423544031 - 2² = 423544027 is a prime.

It is a super-2 number, since 2×423544031² = 358779092391457922, 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 (423544061) 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, 390905 + ... + 391986.

It is an arithmetic number, because the mean of its divisors is an integer number (106081866).

Almost surely, 2^423544031 is an apocalyptic number.

423544031 is a deficient number, since it is larger than the sum of its proper divisors (783433).

423544031 is an equidigital number, since it uses as much as digits as its factorization.

423544031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783432.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 423544031 is about 20580.1853976100. The cubic root of 423544031 is about 750.9877539591.

Adding to 423544031 its reverse (130445324), we get a palindrome (553989355).

The spelling of 423544031 in words is "four hundred twenty-three million, five hundred forty-four thousand, thirty-one".