312220343044 has 12 divisors (see below), whose sum is σ = 578525929884. Its totient is φ = 146927220224.

The previous prime is 312220343021. The next prime is 312220343047. The reversal of 312220343044 is 440343022213.

It can be written as a sum of positive squares in 2 ways, for example, as 169547944644 + 142672398400 = 411762^2 + 377720^2 .

It is a super-2 number, since 2×312220343044² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (312220343047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2295737749 + ... + 2295737884.

It is an arithmetic number, because the mean of its divisors is an integer number (48210494157).

Almost surely, 2^312220343044 is an apocalyptic number.

312220343044 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

312220343044 is a deficient number, since it is larger than the sum of its proper divisors (266305586840).

312220343044 is a wasteful number, since it uses less digits than its factorization.

312220343044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4591475654 (or 4591475652 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 312220343044 its reverse (440343022213), we get a palindrome (752563365257).

The spelling of 312220343044 in words is "three hundred twelve billion, two hundred twenty million, three hundred forty-three thousand, forty-four".