423131232 has 48 divisors (see below), whose sum is σ = 1115009280. Its totient is φ = 140499072.

The previous prime is 423131231. The next prime is 423131237. The reversal of 423131232 is 232131324.

It is a tau number, because it is divible by the number of its divisors (48).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 423131199 and 423131208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423131231) 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, 16869 + ... + 33627.

It is an arithmetic number, because the mean of its divisors is an integer number (23229360).

Almost surely, 2^423131232 is an apocalyptic number.

It is an amenable number.

423131232 is an abundant number, since it is smaller than the sum of its proper divisors (691878048).

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

423131232 is a wasteful number, since it uses less digits than its factorization.

423131232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17035 (or 17027 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 423131232 is about 20570.1539128904. The cubic root of 423131232 is about 750.7436960889.

Adding to 423131232 its reverse (232131324), we get a palindrome (655262556).

The spelling of 423131232 in words is "four hundred twenty-three million, one hundred thirty-one thousand, two hundred thirty-two".