312021320230021 has 8 divisors (see below), whose sum is σ = 325632354802560. Its totient is φ = 298414026508752.

The previous prime is 312021320230001. The next prime is 312021320230049. The reversal of 312021320230021 is 120032023120213.

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 312021320230021 - 2¹¹ = 312021320227973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312021320229974 and 312021320230001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312021320230001) 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, 935042361 + ... + 935375998.

It is an arithmetic number, because the mean of its divisors is an integer number (40704044350320).

Almost surely, 2^{312021320230021} is an apocalyptic number.

It is an amenable number.

312021320230021 is a deficient number, since it is larger than the sum of its proper divisors (13611034572539).

312021320230021 is a wasteful number, since it uses less digits than its factorization.

312021320230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1870425635.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 312021320230021 its reverse (120032023120213), we get a palindrome (432053343350234).

The spelling of 312021320230021 in words is "three hundred twelve trillion, twenty-one billion, three hundred twenty million, two hundred thirty thousand, twenty-one".