312010230121 has 4 divisors (see below), whose sum is σ = 328431821200. Its totient is φ = 295588639044.

The previous prime is 312010230107. The next prime is 312010230139. The reversal of 312010230121 is 121032010213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121032010213 = 2207 ⋅54840059.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312010230121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312010230095 and 312010230104.

It is not an unprimeable number, because it can be changed into a prime (312010230221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8210795511 + ... + 8210795548.

It is an arithmetic number, because the mean of its divisors is an integer number (82107955300).

Almost surely, 2^312010230121 is an apocalyptic number.

It is an amenable number.

312010230121 is a deficient number, since it is larger than the sum of its proper divisors (16421591079).

312010230121 is a wasteful number, since it uses less digits than its factorization.

312010230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16421591078.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 312010230121 its reverse (121032010213), we get a palindrome (433042240334).

The spelling of 312010230121 in words is "three hundred twelve billion, ten million, two hundred thirty thousand, one hundred twenty-one".