312312012 has 12 divisors (see below), whose sum is σ = 728728056. Its totient is φ = 104104000.

The previous prime is 312312001. The next prime is 312312019. The reversal of 312312012 is 210213213.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 312311982 and 312312000.

It is not an unprimeable number, because it can be changed into a prime (312312019) 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, 13012989 + ... + 13013012.

It is an arithmetic number, because the mean of its divisors is an integer number (60727338).

Almost surely, 2^312312012 is an apocalyptic number.

It is an amenable number.

312312012 is an abundant number, since it is smaller than the sum of its proper divisors (416416044).

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

312312012 is a wasteful number, since it uses less digits than its factorization.

312312012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26026008 (or 26026006 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 312312012 is about 17672.3516261985. The cubic root of 312312012 is about 678.4683027369.

Adding to 312312012 its reverse (210213213), we get a palindrome (522525225).

The spelling of 312312012 in words is "three hundred twelve million, three hundred twelve thousand, twelve".