312032243 has 2 divisors, whose sum is σ = 312032244. Its totient is φ = 312032242.

The previous prime is 312032207. The next prime is 312032249. The reversal of 312032243 is 342230213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312032243 - 2¹⁰ = 312031219 is a prime.

It is a super-2 number, since 2×312032243² = 194728241343222098, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (312032249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156016121 + 156016122.

It is an arithmetic number, because the mean of its divisors is an integer number (156016122).

Almost surely, 2^312032243 is an apocalyptic number.

312032243 is a deficient number, since it is larger than the sum of its proper divisors (1).

312032243 is an equidigital number, since it uses as much as digits as its factorization.

312032243 is an odious number, because the sum of its binary digits is odd.

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

The square root of 312032243 is about 17664.4344092869. The cubic root of 312032243 is about 678.2656516507.

Adding to 312032243 its reverse (342230213), we get a palindrome (654262456).

The spelling of 312032243 in words is "three hundred twelve million, thirty-two thousand, two hundred forty-three".