312111101 has 8 divisors (see below), whose sum is σ = 316810944. Its totient is φ = 307419840.

The previous prime is 312111083. The next prime is 312111103. The reversal of 312111101 is 101111213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312111101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312111103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131810 + ... + 134156.

It is an arithmetic number, because the mean of its divisors is an integer number (39601368).

Almost surely, 2^312111101 is an apocalyptic number.

It is an amenable number.

312111101 is a deficient number, since it is larger than the sum of its proper divisors (4699843).

312111101 is a wasteful number, since it uses less digits than its factorization.

312111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4291.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 312111101 is about 17666.6663805031. Note that the first 3 decimals coincide. The cubic root of 312111101 is about 678.3227848144.

Adding to 312111101 its reverse (101111213), we get a palindrome (413222314).

The spelling of 312111101 in words is "three hundred twelve million, one hundred eleven thousand, one hundred one".