312312331 has 4 divisors (see below), whose sum is σ = 325891152. Its totient is φ = 298733512.

The previous prime is 312312307. The next prime is 312312337. The reversal of 312312331 is 133213213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 312312331 - 2¹¹ = 312310283 is a prime.

It is a super-2 number, since 2×312312331² = 195077984189307122, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 5.

It is a junction number, because it is equal to n+sod(n) for n = 312312299 and 312312308.

It is not an unprimeable number, because it can be changed into a prime (312312337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6789376 + ... + 6789421.

It is an arithmetic number, because the mean of its divisors is an integer number (81472788).

Almost surely, 2^312312331 is an apocalyptic number.

312312331 is a deficient number, since it is larger than the sum of its proper divisors (13578821).

312312331 is a wasteful number, since it uses less digits than its factorization.

312312331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13578820.

The product of its digits is 324, while the sum is 19.

The square root of 312312331 is about 17672.3606515938. The cubic root of 312312331 is about 678.4685337359.

Adding to 312312331 its reverse (133213213), we get a palindrome (445525544).

The spelling of 312312331 in words is "three hundred twelve million, three hundred twelve thousand, three hundred thirty-one".