312023220112 has 40 divisors (see below), whose sum is σ = 605714055480. Its totient is φ = 155710156800.

The previous prime is 312023220109. The next prime is 312023220121. The reversal of 312023220112 is 211022320213.

It can be written as a sum of positive squares in 4 ways, for example, as 158910660496 + 153112559616 = 398636^2 + 391296^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 312023220112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25778862 + ... + 25790962.

It is an arithmetic number, because the mean of its divisors is an integer number (15142851387).

Almost surely, 2^312023220112 is an apocalyptic number.

It is an amenable number.

312023220112 is a deficient number, since it is larger than the sum of its proper divisors (293690835368).

312023220112 is a wasteful number, since it uses less digits than its factorization.

312023220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15091 (or 15085 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 312023220112 its reverse (211022320213), we get a palindrome (523045540325).

The spelling of 312023220112 in words is "three hundred twelve billion, twenty-three million, two hundred twenty thousand, one hundred twelve".