31230412 has 24 divisors (see below), whose sum is σ = 57611232. Its totient is φ = 14784000.

The previous prime is 31230403. The next prime is 31230413. The reversal of 31230412 is 21403213.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31230413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7612 + ... + 10972.

It is an arithmetic number, because the mean of its divisors is an integer number (2400468).

Almost surely, 2^31230412 is an apocalyptic number.

It is an amenable number.

31230412 is a deficient number, since it is larger than the sum of its proper divisors (26380820).

31230412 is a wasteful number, since it uses less digits than its factorization.

31230412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3489 (or 3487 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 31230412 is about 5588.4176651356. The cubic root of 31230412 is about 314.9144371623.

Adding to 31230412 its reverse (21403213), we get a palindrome (52633625).

The spelling of 31230412 in words is "thirty-one million, two hundred thirty thousand, four hundred twelve".