312112101 has 16 divisors (see below), whose sum is σ = 485720064. Its totient is φ = 174554544.

The previous prime is 312112081. The next prime is 312112109. The reversal of 312112101 is 101211213.

It is not a de Polignac number, because 312112101 - 2⁷ = 312111973 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312112109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157125 + ... + 159098.

It is an arithmetic number, because the mean of its divisors is an integer number (30357504).

Almost surely, 2^312112101 is an apocalyptic number.

It is an amenable number.

312112101 is a deficient number, since it is larger than the sum of its proper divisors (173607963).

312112101 is a wasteful number, since it uses less digits than its factorization.

312112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316280.

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

The square root of 312112101 is about 17666.6946823677. The cubic root of 312112101 is about 678.3235092595.

Adding to 312112101 its reverse (101211213), we get a palindrome (413323314).

It can be divided in two parts, 312112 and 101, that added together give a palindrome (312213).

The spelling of 312112101 in words is "three hundred twelve million, one hundred twelve thousand, one hundred one".