423658331 has 4 divisors (see below), whose sum is σ = 425431200. Its totient is φ = 421885464.

The previous prime is 423658327. The next prime is 423658351. The reversal of 423658331 is 133856324.

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 423658331 - 2² = 423658327 is a prime.

It is a super-4 number, since 4×423658331⁴ (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 423658291 and 423658300.

It is not an unprimeable number, because it can be changed into a prime (423658351) 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, 886076 + ... + 886553.

It is an arithmetic number, because the mean of its divisors is an integer number (106357800).

Almost surely, 2^423658331 is an apocalyptic number.

423658331 is a deficient number, since it is larger than the sum of its proper divisors (1772869).

423658331 is a wasteful number, since it uses less digits than its factorization.

423658331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772868.

The product of its digits is 51840, while the sum is 35.

The square root of 423658331 is about 20582.9621531985. The cubic root of 423658331 is about 751.0553031580.

The spelling of 423658331 in words is "four hundred twenty-three million, six hundred fifty-eight thousand, three hundred thirty-one".