312225121342 has 16 divisors (see below), whose sum is σ = 479819585952. Its totient is φ = 152286196480.

The previous prime is 312225121211. The next prime is 312225121343. The reversal of 312225121342 is 243121522213.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 312225121342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312225121343) 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, 448263 + ... + 908509.

It is an arithmetic number, because the mean of its divisors is an integer number (29988724122).

Almost surely, 2^312225121342 is an apocalyptic number.

312225121342 is a deficient number, since it is larger than the sum of its proper divisors (167594464610).

312225121342 is a wasteful number, since it uses less digits than its factorization.

312225121342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468563.

The product of its digits is 5760, while the sum is 28.

Adding to 312225121342 its reverse (243121522213), we get a palindrome (555346643555).

The spelling of 312225121342 in words is "three hundred twelve billion, two hundred twenty-five million, one hundred twenty-one thousand, three hundred forty-two".