312043502121 has 8 divisors (see below), whose sum is σ = 448062464640. Its totient is φ = 192026770512.

The previous prime is 312043502093. The next prime is 312043502167. The reversal of 312043502121 is 121205340213.

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

It is not a de Polignac number, because 312043502121 - 2²⁹ = 311506631209 is a prime.

It is a super-2 number, since 2×312043502121² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 312043502091 and 312043502100.

It is not an unprimeable number, because it can be changed into a prime (312043522121) 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, 4000557681 + ... + 4000557758.

It is an arithmetic number, because the mean of its divisors is an integer number (56007808080).

Almost surely, 2^312043502121 is an apocalyptic number.

It is an amenable number.

312043502121 is a deficient number, since it is larger than the sum of its proper divisors (136018962519).

312043502121 is a wasteful number, since it uses less digits than its factorization.

312043502121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8001115455.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 312043502121 its reverse (121205340213), we get a palindrome (433248842334).

The spelling of 312043502121 in words is "three hundred twelve billion, forty-three million, five hundred two thousand, one hundred twenty-one".