312433212 has 96 divisors (see below), whose sum is σ = 915712000. Its totient is φ = 82385856.

The previous prime is 312433189. The next prime is 312433213. The reversal of 312433212 is 212334213.

It is a super-2 number, since 2×312433212² = 195229023921273888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312433213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50589 + ... + 56427.

Almost surely, 2^312433212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312433212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (457856000).

312433212 is an abundant number, since it is smaller than the sum of its proper divisors (603278788).

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

312433212 is a wasteful number, since it uses less digits than its factorization.

312433212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5880 (or 5864 counting only the distinct ones).

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

The square root of 312433212 is about 17675.7803788121. The cubic root of 312433212 is about 678.5560565646.

Adding to 312433212 its reverse (212334213), we get a palindrome (524767425).

The spelling of 312433212 in words is "three hundred twelve million, four hundred thirty-three thousand, two hundred twelve".