423506231 has 4 divisors (see below), whose sum is σ = 427699464. Its totient is φ = 419313000.

The previous prime is 423506207. The next prime is 423506243. The reversal of 423506231 is 132605324.

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-423506231 is a prime.

It is a super-2 number, since 2×423506231² = 358715055391650722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423506231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423506201) 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, 2096465 + ... + 2096666.

It is an arithmetic number, because the mean of its divisors is an integer number (106924866).

Almost surely, 2^423506231 is an apocalyptic number.

423506231 is a deficient number, since it is larger than the sum of its proper divisors (4193233).

423506231 is a wasteful number, since it uses less digits than its factorization.

423506231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4193232.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 423506231 is about 20579.2670180451. The cubic root of 423506231 is about 750.9654121800.

The spelling of 423506231 in words is "four hundred twenty-three million, five hundred six thousand, two hundred thirty-one".