312215105340012 has 96 divisors (see below), whose sum is σ = 834368671825920. Its totient is φ = 89012013641280.

The previous prime is 312215105340011. The next prime is 312215105340013. The reversal of 312215105340012 is 210043501512213.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (312215105340011) and next prime (312215105340013).

It is not an unprimeable number, because it can be changed into a prime (312215105340011) 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, 606944383 + ... + 607458569.

It is an arithmetic number, because the mean of its divisors is an integer number (8691340331520).

Almost surely, 2^{312215105340012} is an apocalyptic number.

It is an amenable number.

312215105340012 is an abundant number, since it is smaller than the sum of its proper divisors (522153566485908).

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

312215105340012 is a wasteful number, since it uses less digits than its factorization.

312215105340012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529771 (or 529769 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 312215105340012 its reverse (210043501512213), we get a palindrome (522258606852225).

The spelling of 312215105340012 in words is "three hundred twelve trillion, two hundred fifteen billion, one hundred five million, three hundred forty thousand, twelve".