312212124 has 72 divisors (see below), whose sum is σ = 941608080. Its totient is φ = 89201952.

The previous prime is 312212119. The next prime is 312212137. The reversal of 312212124 is 421212213.

It is a happy number.

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 a junction number, because it is equal to n+sod(n) for n = 312212097 and 312212106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24207 + ... + 34790.

It is an arithmetic number, because the mean of its divisors is an integer number (13077890).

Almost surely, 2^312212124 is an apocalyptic number.

It is an amenable number.

312212124 is an abundant number, since it is smaller than the sum of its proper divisors (629395956).

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

312212124 is a wasteful number, since it uses less digits than its factorization.

312212124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59024 (or 59009 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 312212124 is about 17669.5252907372. The cubic root of 312212124 is about 678.3959626137.

Adding to 312212124 its reverse (421212213), we get a palindrome (733424337).

The spelling of 312212124 in words is "three hundred twelve million, two hundred twelve thousand, one hundred twenty-four".