34143209981 has 2 divisors, whose sum is σ = 34143209982. Its totient is φ = 34143209980.

The previous prime is 34143209927. The next prime is 34143210029. The reversal of 34143209981 is 18990234143.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33441436900 + 701773081 = 182870^2 + 26491^2 .

It is an emirp because it is prime and its reverse (18990234143) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34143209981 - 2⁶ = 34143209917 is a prime.

It is a super-2 number, since 2×34143209981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34143203981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17071604990 + 17071604991.

It is an arithmetic number, because the mean of its divisors is an integer number (17071604991).

Almost surely, 2^34143209981 is an apocalyptic number.

It is an amenable number.

34143209981 is a deficient number, since it is larger than the sum of its proper divisors (1).

34143209981 is an equidigital number, since it uses as much as digits as its factorization.

34143209981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 34143209981 in words is "thirty-four billion, one hundred forty-three million, two hundred nine thousand, nine hundred eighty-one".