312135124 has 12 divisors (see below), whose sum is σ = 624270304. Its totient is φ = 133772184.

The previous prime is 312135121. The next prime is 312135143. The reversal of 312135124 is 421531213.

It is a happy number.

312135124 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 312135095 and 312135104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312135121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5573814 + ... + 5573869.

Almost surely, 2^312135124 is an apocalyptic number.

It is an amenable number.

312135124 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

312135124 is a wasteful number, since it uses less digits than its factorization.

312135124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11147694 (or 11147692 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 312135124 is about 17667.3462636583. The cubic root of 312135124 is about 678.3401877308.

Adding to 312135124 its reverse (421531213), we get a palindrome (733666337).

The spelling of 312135124 in words is "three hundred twelve million, one hundred thirty-five thousand, one hundred twenty-four".