312122255620 has 48 divisors (see below), whose sum is σ = 749674090368. Its totient is φ = 106930391040.

The previous prime is 312122255609. The next prime is 312122255671. The reversal of 312122255620 is 26552221213.

It is an unprimeable number.

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, 682717 + ... + 1044196.

It is an arithmetic number, because the mean of its divisors is an integer number (15618210216).

Almost surely, 2^312122255620 is an apocalyptic number.

It is an amenable number.

312122255620 is an abundant number, since it is smaller than the sum of its proper divisors (437551834748).

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

312122255620 is a wasteful number, since it uses less digits than its factorization.

312122255620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728220 (or 1728218 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 312122255620 its reverse (26552221213), we get a palindrome (338674476833).

The spelling of 312122255620 in words is "three hundred twelve billion, one hundred twenty-two million, two hundred fifty-five thousand, six hundred twenty".