312112331 has 8 divisors (see below), whose sum is σ = 320785920. Its totient is φ = 303556968.

The previous prime is 312112327. The next prime is 312112337. The reversal of 312112331 is 133211213.

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 312112331 - 2² = 312112327 is a prime.

It is a super-2 number, since 2×312112331² = 194828214324507122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312112337) 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, 24191 + ... + 34776.

It is an arithmetic number, because the mean of its divisors is an integer number (40098240).

Almost surely, 2^312112331 is an apocalyptic number.

312112331 is a deficient number, since it is larger than the sum of its proper divisors (8673589).

312112331 is an equidigital number, since it uses as much as digits as its factorization.

312112331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59113.

The product of its digits is 108, while the sum is 17.

The square root of 312112331 is about 17666.7011917902. The cubic root of 312112331 is about 678.3236758816.

Adding to 312112331 its reverse (133211213), we get a palindrome (445323544).

The spelling of 312112331 in words is "three hundred twelve million, one hundred twelve thousand, three hundred thirty-one".