312212232 has 48 divisors (see below), whose sum is σ = 876897840. Its totient is φ = 104070096.

The previous prime is 312212221. The next prime is 312212233. The reversal of 312212232 is 232212213.

It is a Harshad number since it is a multiple of its sum of digits (18).

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

It is not an unprimeable number, because it can be changed into a prime (312212233) 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, 78358 + ... + 82245.

It is an arithmetic number, because the mean of its divisors is an integer number (18268705).

Almost surely, 2^312212232 is an apocalyptic number.

It is an amenable number.

312212232 is an abundant number, since it is smaller than the sum of its proper divisors (564685608).

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

312212232 is a wasteful number, since it uses less digits than its factorization.

312212232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160624 (or 160608 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 312212232 is about 17669.5283468462. The cubic root of 312212232 is about 678.3960408370.

Adding to 312212232 its reverse (232212213), we get a palindrome (544424445).

The spelling of 312212232 in words is "three hundred twelve million, two hundred twelve thousand, two hundred thirty-two".