312220352 has 14 divisors (see below), whose sum is σ = 619562388. Its totient is φ = 156110144.

The previous prime is 312220339. The next prime is 312220357. The reversal of 312220352 is 253022213.

It is not an unprimeable number, because it can be changed into a prime (312220357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2439158 + ... + 2439285.

Almost surely, 2^312220352 is an apocalyptic number.

312220352 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

312220352 is a deficient number, since it is larger than the sum of its proper divisors (307342036).

312220352 is an equidigital number, since it uses as much as digits as its factorization.

312220352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4878455 (or 4878445 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 312220352 is about 17669.7581194537. The cubic root of 312220352 is about 678.4019220160.

Adding to 312220352 its reverse (253022213), we get a palindrome (565242565).

The spelling of 312220352 in words is "three hundred twelve million, two hundred twenty thousand, three hundred fifty-two".