312222323012 has 6 divisors (see below), whose sum is σ = 546389065278. Its totient is φ = 156111161504.

The previous prime is 312222322987. The next prime is 312222323041. The reversal of 312222323012 is 210323222213.

It can be written as a sum of positive squares in only one way, i.e., 195554990656 + 116667332356 = 442216^2 + 341566^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39027790373 + ... + 39027790380.

It is an arithmetic number, because the mean of its divisors is an integer number (91064844213).

Almost surely, 2^312222323012 is an apocalyptic number.

It is an amenable number.

312222323012 is a deficient number, since it is larger than the sum of its proper divisors (234166742266).

312222323012 is a wasteful number, since it uses less digits than its factorization.

312222323012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78055580757 (or 78055580755 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 312222323012 its reverse (210323222213), we get a palindrome (522545545225).

The spelling of 312222323012 in words is "three hundred twelve billion, two hundred twenty-two million, three hundred twenty-three thousand, twelve".