312101112 has 32 divisors (see below), whose sum is σ = 782812800. Its totient is φ = 103692384.

The previous prime is 312101093. The next prime is 312101159. The reversal of 312101112 is 211101213.

It is a super-2 number, since 2×312101112² = 194814208223273088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13812 + ... + 28547.

It is an arithmetic number, because the mean of its divisors is an integer number (24462900).

Almost surely, 2^312101112 is an apocalyptic number.

It is an amenable number.

312101112 is an abundant number, since it is smaller than the sum of its proper divisors (470711688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312101112 is a wasteful number, since it uses less digits than its factorization.

312101112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42675 (or 42671 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 312101112 is about 17666.3836706894. The cubic root of 312101112 is about 678.3155482475.

Adding to 312101112 its reverse (211101213), we get a palindrome (523202325).

It can be divided in two parts, 312101 and 112, that added together give a palindrome (312213).

The spelling of 312101112 in words is "three hundred twelve million, one hundred one thousand, one hundred twelve".