31312112101 has 8 divisors (see below), whose sum is σ = 31348083200. Its totient is φ = 31276164528.

The previous prime is 31312112077. The next prime is 31312112189. The reversal of 31312112101 is 10121121313.

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 not a de Polignac number, because 31312112101 - 2⁷ = 31312111973 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 (31312115101) 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, 4144075 + ... + 4151623.

It is an arithmetic number, because the mean of its divisors is an integer number (3918510400).

Almost surely, 2^31312112101 is an apocalyptic number.

It is an amenable number.

31312112101 is a deficient number, since it is larger than the sum of its proper divisors (35971099).

31312112101 is a wasteful number, since it uses less digits than its factorization.

31312112101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11763.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 31312112101 its reverse (10121121313), we get a palindrome (41433233414).

The spelling of 31312112101 in words is "thirty-one billion, three hundred twelve million, one hundred twelve thousand, one hundred one".