423831239 has 8 divisors (see below), whose sum is σ = 457995552. Its totient is φ = 389890080.

The previous prime is 423831223. The next prime is 423831253. The reversal of 423831239 is 932138324.

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 423831239 - 2⁴ = 423831223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 423831199 and 423831208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423831739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51827 + ... + 59444.

It is an arithmetic number, because the mean of its divisors is an integer number (57249444).

Almost surely, 2^423831239 is an apocalyptic number.

423831239 is a deficient number, since it is larger than the sum of its proper divisors (34164313).

423831239 is a wasteful number, since it uses less digits than its factorization.

423831239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111577.

The product of its digits is 31104, while the sum is 35.

The square root of 423831239 is about 20587.1619947967. The cubic root of 423831239 is about 751.1574655199.

The spelling of 423831239 in words is "four hundred twenty-three million, eight hundred thirty-one thousand, two hundred thirty-nine".