312113232321 has 32 divisors (see below), whose sum is σ = 457917860736. Its totient is φ = 189083892800.

The previous prime is 312113232281. The next prime is 312113232341. The reversal of 312113232321 is 123232311213.

It is not a de Polignac number, because 312113232321 - 2⁶ = 312113232257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312113232291 and 312113232300.

It is not an unprimeable number, because it can be changed into a prime (312113232341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10930555 + ... + 10959071.

It is an arithmetic number, because the mean of its divisors is an integer number (14309933148).

Almost surely, 2^312113232321 is an apocalyptic number.

It is an amenable number.

312113232321 is a deficient number, since it is larger than the sum of its proper divisors (145804628415).

312113232321 is a wasteful number, since it uses less digits than its factorization.

312113232321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31294 (or 31272 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

Adding to 312113232321 its reverse (123232311213), we get a palindrome (435345543534).

The spelling of 312113232321 in words is "three hundred twelve billion, one hundred thirteen million, two hundred thirty-two thousand, three hundred twenty-one".