312283231 has 4 divisors (see below), whose sum is σ = 336305032. Its totient is φ = 288261432.

The previous prime is 312283229. The next prime is 312283241. The reversal of 312283231 is 132382213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132382213 = 17 ⋅7787189.

It is a cyclic number.

It is not a de Polignac number, because 312283231 - 2¹ = 312283229 is a prime.

It is a super-2 number, since 2×312283231² = 195041632727598722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312283196 and 312283205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312283201) 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, 12010881 + ... + 12010906.

It is an arithmetic number, because the mean of its divisors is an integer number (84076258).

Almost surely, 2^312283231 is an apocalyptic number.

312283231 is a deficient number, since it is larger than the sum of its proper divisors (24021801).

312283231 is a wasteful number, since it uses less digits than its factorization.

312283231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24021800.

The product of its digits is 1728, while the sum is 25.

The square root of 312283231 is about 17671.5373128656. The cubic root of 312283231 is about 678.4474607634.

The spelling of 312283231 in words is "three hundred twelve million, two hundred eighty-three thousand, two hundred thirty-one".