312243023 has 4 divisors (see below), whose sum is σ = 312446928. Its totient is φ = 312039120.

The previous prime is 312242989. The next prime is 312243031. The reversal of 312243023 is 320342213.

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 312243023 - 2¹⁶ = 312177487 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312242986 and 312243004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312243053) 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, 99638 + ... + 102723.

It is an arithmetic number, because the mean of its divisors is an integer number (78111732).

Almost surely, 2^312243023 is an apocalyptic number.

312243023 is a deficient number, since it is larger than the sum of its proper divisors (203905).

312243023 is a wasteful number, since it uses less digits than its factorization.

312243023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203904.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 312243023 is about 17670.3996276259. The cubic root of 312243023 is about 678.4183416992.

Adding to 312243023 its reverse (320342213), we get a palindrome (632585236).

The spelling of 312243023 in words is "three hundred twelve million, two hundred forty-three thousand, twenty-three".