312202223 has 2 divisors, whose sum is σ = 312202224. Its totient is φ = 312202222.

The previous prime is 312202169. The next prime is 312202273. The reversal of 312202223 is 322202213.

It is a strong prime.

It is an emirp because it is prime and its reverse (322202213) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312202223 is a prime.

It is a super-2 number, since 2×312202223² = 194940456092283458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312202273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156101111 + 156101112.

It is an arithmetic number, because the mean of its divisors is an integer number (156101112).

Almost surely, 2^312202223 is an apocalyptic number.

312202223 is a deficient number, since it is larger than the sum of its proper divisors (1).

312202223 is an equidigital number, since it uses as much as digits as its factorization.

312202223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 312202223 is about 17669.2451168690. The cubic root of 312202223 is about 678.3887913468.

Adding to 312202223 its reverse (322202213), we get a palindrome (634404436).

The spelling of 312202223 in words is "three hundred twelve million, two hundred two thousand, two hundred twenty-three".