312123210331 has 8 divisors (see below), whose sum is σ = 332049675024. Its totient is φ = 292370776320.

The previous prime is 312123210283. The next prime is 312123210341. The reversal of 312123210331 is 133012321213.

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

It is not a de Polignac number, because 312123210331 - 2⁹ = 312123209819 is a prime.

It is a super-2 number, since 2×312123210331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312123210341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43503970 + ... + 43511143.

It is an arithmetic number, because the mean of its divisors is an integer number (41506209378).

Almost surely, 2^312123210331 is an apocalyptic number.

312123210331 is a deficient number, since it is larger than the sum of its proper divisors (19926464693).

312123210331 is a wasteful number, since it uses less digits than its factorization.

312123210331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87015341.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 312123210331 its reverse (133012321213), we get a palindrome (445135531544).

The spelling of 312123210331 in words is "three hundred twelve billion, one hundred twenty-three million, two hundred ten thousand, three hundred thirty-one".