423031392 has 72 divisors (see below), whose sum is σ = 1374858576. Its totient is φ = 120865536.

The previous prime is 423031391. The next prime is 423031421. The reversal of 423031392 is 293130324.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-3 number, since 3×423031392³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423031391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102903 + ... + 106934.

It is an arithmetic number, because the mean of its divisors is an integer number (19095258).

Almost surely, 2^423031392 is an apocalyptic number.

423031392 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

423031392 is an abundant number, since it is smaller than the sum of its proper divisors (951827184).

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

423031392 is a wasteful number, since it uses less digits than its factorization.

423031392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209860 (or 209849 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 423031392 is about 20567.7269526800. The cubic root of 423031392 is about 750.6846441597.

The spelling of 423031392 in words is "four hundred twenty-three million, thirty-one thousand, three hundred ninety-two".