312222301320 has 128 divisors (see below), whose sum is σ = 940106528640. Its totient is φ = 82953953280.

The previous prime is 312222301297. The next prime is 312222301411. The reversal of 312222301320 is 23103222213.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68663287 + ... + 68667833.

It is an arithmetic number, because the mean of its divisors is an integer number (7344582255).

Almost surely, 2^312222301320 is an apocalyptic number.

312222301320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312222301320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (470053264320).

312222301320 is an abundant number, since it is smaller than the sum of its proper divisors (627884227320).

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

312222301320 is a wasteful number, since it uses less digits than its factorization.

312222301320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6535 (or 6531 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 312222301320 its reverse (23103222213), we get a palindrome (335325523533).

The spelling of 312222301320 in words is "three hundred twelve billion, two hundred twenty-two million, three hundred one thousand, three hundred twenty".