331430432 has 12 divisors (see below), whose sum is σ = 652503726. Its totient is φ = 165715200.

The previous prime is 331430431. The next prime is 331430443. The reversal of 331430432 is 234034133.

It can be written as a sum of positive squares in only one way, i.e., 282374416 + 49056016 = 16804^2 + 7004^2 .

It is a super-2 number, since 2×331430432² = 219692262511413248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331430398 and 331430407.

It is not an unprimeable number, because it can be changed into a prime (331430431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5178569 + ... + 5178632.

Almost surely, 2^331430432 is an apocalyptic number.

331430432 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

331430432 is a deficient number, since it is larger than the sum of its proper divisors (321073294).

331430432 is a wasteful number, since it uses less digits than its factorization.

331430432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10357211 (or 10357203 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 331430432 is about 18205.2308966407. The cubic root of 331430432 is about 692.0393575797.

Adding to 331430432 its reverse (234034133), we get a palindrome (565464565).

The spelling of 331430432 in words is "three hundred thirty-one million, four hundred thirty thousand, four hundred thirty-two".