312142434220 has 48 divisors (see below), whose sum is σ = 696426903648. Its totient is φ = 117111342080.

The previous prime is 312142434193. The next prime is 312142434229. The reversal of 312142434220 is 22434241213.

It is not an unprimeable number, because it can be changed into a prime (312142434229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1467046 + ... + 1666285.

It is an arithmetic number, because the mean of its divisors is an integer number (14508893826).

Almost surely, 2^312142434220 is an apocalyptic number.

It is an amenable number.

312142434220 is an abundant number, since it is smaller than the sum of its proper divisors (384284469428).

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

312142434220 is a wasteful number, since it uses less digits than its factorization.

312142434220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3133650 (or 3133648 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 312142434220 its reverse (22434241213), we get a palindrome (334576675433).

The spelling of 312142434220 in words is "three hundred twelve billion, one hundred forty-two million, four hundred thirty-four thousand, two hundred twenty".