312105012 has 24 divisors (see below), whose sum is σ = 728781312. Its totient is φ = 103958400.

The previous prime is 312105007. The next prime is 312105019. The reversal of 312105012 is 210501213.

It is a junction number, because it is equal to n+sod(n) for n = 312104982 and 312105000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312105019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8812 + ... + 26492.

It is an arithmetic number, because the mean of its divisors is an integer number (30365888).

Almost surely, 2^312105012 is an apocalyptic number.

It is an amenable number.

312105012 is an abundant number, since it is smaller than the sum of its proper divisors (416676300).

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

312105012 is a wasteful number, since it uses less digits than its factorization.

312105012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19159 (or 19157 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 312105012 is about 17666.4940494712. The cubic root of 312105012 is about 678.3183736348.

Adding to 312105012 its reverse (210501213), we get a palindrome (522606225).

The spelling of 312105012 in words is "three hundred twelve million, one hundred five thousand, twelve".