312113312121 has 8 divisors (see below), whose sum is σ = 448162704640. Its totient is φ = 192069730512.

The previous prime is 312113312111. The next prime is 312113312123. The reversal of 312113312121 is 121213311213.

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

It is not a de Polignac number, because 312113312121 - 2¹⁴ = 312113295737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312113312123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4001452681 + ... + 4001452758.

It is an arithmetic number, because the mean of its divisors is an integer number (56020338080).

Almost surely, 2^312113312121 is an apocalyptic number.

It is an amenable number.

312113312121 is a deficient number, since it is larger than the sum of its proper divisors (136049392519).

312113312121 is a wasteful number, since it uses less digits than its factorization.

312113312121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8002905455.

The product of its digits is 216, while the sum is 21.

Adding to 312113312121 its reverse (121213311213), we get a palindrome (433326623334).

The spelling of 312113312121 in words is "three hundred twelve billion, one hundred thirteen million, three hundred twelve thousand, one hundred twenty-one".