343874433962981 has 2 divisors, whose sum is σ = 343874433962982. Its totient is φ = 343874433962980.

The previous prime is 343874433962963. The next prime is 343874433963001. The reversal of 343874433962981 is 189269334478343.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 320613018148900 + 23261415814081 = 17905670^2 + 4823009^2 .

It is a cyclic number.

It is not a de Polignac number, because 343874433962981 - 2¹⁰ = 343874433961957 is a prime.

It is a super-2 number, since 2×343874433962981² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 343874433962899 and 343874433962908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343874433902981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171937216981490 + 171937216981491.

It is an arithmetic number, because the mean of its divisors is an integer number (171937216981491).

Almost surely, 2^{343874433962981} is an apocalyptic number.

It is an amenable number.

343874433962981 is a deficient number, since it is larger than the sum of its proper divisors (1).

343874433962981 is an equidigital number, since it uses as much as digits as its factorization.

343874433962981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2257403904, while the sum is 74.

The spelling of 343874433962981 in words is "three hundred forty-three trillion, eight hundred seventy-four billion, four hundred thirty-three million, nine hundred sixty-two thousand, nine hundred eighty-one".