311212033312 has 12 divisors (see below), whose sum is σ = 612698690646. Its totient is φ = 155606016640.

The previous prime is 311212033289. The next prime is 311212033331. The reversal of 311212033312 is 213330212113.

It can be written as a sum of positive squares in only one way, i.e., 237056029456 + 74156003856 = 486884^2 + 272316^2 .

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 as a sum of consecutive naturals, namely, 4862687989 + ... + 4862688052.

Almost surely, 2^311212033312 is an apocalyptic number.

311212033312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

311212033312 is a deficient number, since it is larger than the sum of its proper divisors (301486657334).

311212033312 is an equidigital number, since it uses as much as digits as its factorization.

311212033312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9725376051 (or 9725376043 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 311212033312 its reverse (213330212113), we get a palindrome (524542245425).

The spelling of 311212033312 in words is "three hundred eleven billion, two hundred twelve million, thirty-three thousand, three hundred twelve".