312012310230121 has 8 divisors (see below), whose sum is σ = 322772415067080. Its totient is φ = 301252276036992.

The previous prime is 312012310230091. The next prime is 312012310230139. The reversal of 312012310230121 is 121032013210213.

It can be written as a sum of positive squares in 4 ways, for example, as 2721559581225 + 309290750648896 = 1649715^2 + 17586664^2 .

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 312012310230121 - 2²⁵ = 312012276675689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312012310230092 and 312012310230101.

It is not an unprimeable number, because it can be changed into a prime (312012310230191) 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, 8596390 + ... + 26418223.

It is an arithmetic number, because the mean of its divisors is an integer number (40346551883385).

Almost surely, 2^{312012310230121} is an apocalyptic number.

It is an amenable number.

312012310230121 is a deficient number, since it is larger than the sum of its proper divisors (10760104836959).

312012310230121 is a wasteful number, since it uses less digits than its factorization.

312012310230121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35321915.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 312012310230121 its reverse (121032013210213), we get a palindrome (433044323440334).

The spelling of 312012310230121 in words is "three hundred twelve trillion, twelve billion, three hundred ten million, two hundred thirty thousand, one hundred twenty-one".