312031312321 has 8 divisors (see below), whose sum is σ = 319347230400. Its totient is φ = 304718093232.

The previous prime is 312031312279. The next prime is 312031312337. The reversal of 312031312321 is 123213130213.

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 312031312321 - 2³⁷ = 174592358849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312031312292 and 312031312301.

It is not an unprimeable number, because it can be changed into a prime (312031312421) 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, 439870 + ... + 904183.

It is an arithmetic number, because the mean of its divisors is an integer number (39918403800).

Almost surely, 2^312031312321 is an apocalyptic number.

It is an amenable number.

312031312321 is a deficient number, since it is larger than the sum of its proper divisors (7315918079).

312031312321 is a wasteful number, since it uses less digits than its factorization.

312031312321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349495.

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

Adding to 312031312321 its reverse (123213130213), we get a palindrome (435244442534).

The spelling of 312031312321 in words is "three hundred twelve billion, thirty-one million, three hundred twelve thousand, three hundred twenty-one".