312211301231144 has 64 divisors (see below), whose sum is σ = 693248526643200. Its totient is φ = 129038759688384.

The previous prime is 312211301231111. The next prime is 312211301231183. The reversal of 312211301231144 is 441132103112213.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 820416452 + ... + 820796915.

It is an arithmetic number, because the mean of its divisors is an integer number (10832008228800).

Almost surely, 2^{312211301231144} is an apocalyptic number.

It is an amenable number.

312211301231144 is an abundant number, since it is smaller than the sum of its proper divisors (381037225412056).

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

312211301231144 is a wasteful number, since it uses less digits than its factorization.

312211301231144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641213502 (or 1641213498 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 312211301231144 its reverse (441132103112213), we get a palindrome (753343404343357).

The spelling of 312211301231144 in words is "three hundred twelve trillion, two hundred eleven billion, three hundred one million, two hundred thirty-one thousand, one hundred forty-four".