312193823 has 2 divisors, whose sum is σ = 312193824. Its totient is φ = 312193822.

The previous prime is 312193759. The next prime is 312193837. The reversal of 312193823 is 328391213.

It is a strong prime.

It is an emirp because it is prime and its reverse (328391213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312193823 - 2⁶ = 312193759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312193823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312193853) 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, 156096911 + 156096912.

It is an arithmetic number, because the mean of its divisors is an integer number (156096912).

Almost surely, 2^312193823 is an apocalyptic number.

312193823 is a deficient number, since it is larger than the sum of its proper divisors (1).

312193823 is an equidigital number, since it uses as much as digits as its factorization.

312193823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The square root of 312193823 is about 17669.0074141136. The cubic root of 312193823 is about 678.3827071312.

The spelling of 312193823 in words is "three hundred twelve million, one hundred ninety-three thousand, eight hundred twenty-three".