423331056 has 80 divisors (see below), whose sum is σ = 1217779200. Its totient is φ = 140801472.

The previous prime is 423331043. The next prime is 423331061. The reversal of 423331056 is 650133324.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283945 + ... + 285431.

It is an arithmetic number, because the mean of its divisors is an integer number (15222240).

Almost surely, 2^423331056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423331056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (608889600).

423331056 is an abundant number, since it is smaller than the sum of its proper divisors (794448144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423331056 is a wasteful number, since it uses less digits than its factorization.

423331056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2163 (or 2151 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 423331056 is about 20575.0104738734. The cubic root of 423331056 is about 750.8618572235.

The spelling of 423331056 in words is "four hundred twenty-three million, three hundred thirty-one thousand, fifty-six".