323212219997951 has 2 divisors, whose sum is σ = 323212219997952. Its totient is φ = 323212219997950.

The previous prime is 323212219997929. The next prime is 323212219997971. The reversal of 323212219997951 is 159799912212323.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323212219997951 is a prime.

It is a super-2 number, since 2×323212219997951² (a number of 30 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323212219997971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161606109998975 + 161606109998976.

It is an arithmetic number, because the mean of its divisors is an integer number (161606109998976).

Almost surely, 2^{323212219997951} is an apocalyptic number.

323212219997951 is a deficient number, since it is larger than the sum of its proper divisors (1).

323212219997951 is an equidigital number, since it uses as much as digits as its factorization.

323212219997951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33067440, while the sum is 65.

The spelling of 323212219997951 in words is "three hundred twenty-three trillion, two hundred twelve billion, two hundred nineteen million, nine hundred ninety-seven thousand, nine hundred fifty-one".