12431330 has 8 divisors (see below), whose sum is σ = 22376412. Its totient is φ = 4972528.

The previous prime is 12431329. The next prime is 12431357. The reversal of 12431330 is 3313421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10738729 + 1692601 = 3277^2 + 1301^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×12431330³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12431299 and 12431308.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621557 + ... + 621576.

Almost surely, 2^12431330 is an apocalyptic number.

12431330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12431330 is a deficient number, since it is larger than the sum of its proper divisors (9945082).

12431330 is a wasteful number, since it uses less digits than its factorization.

12431330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243140.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 12431330 is about 3525.8091269948. The cubic root of 12431330 is about 231.6536771927.

Adding to 12431330 its reverse (3313421), we get a palindrome (15744751).

The spelling of 12431330 in words is "twelve million, four hundred thirty-one thousand, three hundred thirty".