312231112 has 16 divisors (see below), whose sum is σ = 619870860. Its totient is φ = 146932224.

The previous prime is 312231103. The next prime is 312231119. The reversal of 312231112 is 211132213.

It can be written as a sum of positive squares in 2 ways, for example, as 295633636 + 16597476 = 17194^2 + 4074^2 .

It is not an unprimeable number, because it can be changed into a prime (312231119) 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 in 3 ways as a sum of consecutive naturals, for example, 1147773 + ... + 1148044.

Almost surely, 2^312231112 is an apocalyptic number.

It is an amenable number.

312231112 is a deficient number, since it is larger than the sum of its proper divisors (307639748).

312231112 is a wasteful number, since it uses less digits than its factorization.

312231112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2295840 (or 2295836 counting only the distinct ones).

The product of its digits is 72, while the sum is 16.

The square root of 312231112 is about 17670.0625918529. The cubic root of 312231112 is about 678.4097151454.

Adding to 312231112 its reverse (211132213), we get a palindrome (523363325).

The spelling of 312231112 in words is "three hundred twelve million, two hundred thirty-one thousand, one hundred twelve".