312210823 has 2 divisors, whose sum is σ = 312210824. Its totient is φ = 312210822.

The previous prime is 312210817. The next prime is 312210841. The reversal of 312210823 is 328012213.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312210823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312210794 and 312210803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312210883) 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, 156105411 + 156105412.

It is an arithmetic number, because the mean of its divisors is an integer number (156105412).

Almost surely, 2^312210823 is an apocalyptic number.

312210823 is a deficient number, since it is larger than the sum of its proper divisors (1).

312210823 is an equidigital number, since it uses as much as digits as its factorization.

312210823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 312210823 is about 17669.4884759010. The cubic root of 312210823 is about 678.3950203117.

The spelling of 312210823 in words is "three hundred twelve million, two hundred ten thousand, eight hundred twenty-three".