343412051981 has 2 divisors, whose sum is σ = 343412051982. Its totient is φ = 343412051980.

The previous prime is 343412051959. The next prime is 343412052059. The reversal of 343412051981 is 189150214343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200248195081 + 143163856900 = 447491^2 + 378370^2 .

It is a cyclic number.

It is not a de Polignac number, because 343412051981 - 2²² = 343407857677 is a prime.

It is a super-2 number, since 2×343412051981² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343412051951) 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, 171706025990 + 171706025991.

It is an arithmetic number, because the mean of its divisors is an integer number (171706025991).

Almost surely, 2^343412051981 is an apocalyptic number.

It is an amenable number.

343412051981 is a deficient number, since it is larger than the sum of its proper divisors (1).

343412051981 is an equidigital number, since it uses as much as digits as its factorization.

343412051981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 343412051981 in words is "three hundred forty-three billion, four hundred twelve million, fifty-one thousand, nine hundred eighty-one".