34247071981 has 4 divisors (see below), whose sum is σ = 34368947964. Its totient is φ = 34125196000.

The previous prime is 34247071907. The next prime is 34247071997. The reversal of 34247071981 is 18917074243.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20267793225 + 13979278756 = 142365^2 + 118234^2 .

It is a cyclic number.

It is not a de Polignac number, because 34247071981 - 2²⁵ = 34213517549 is a prime.

It is a super-2 number, since 2×34247071981² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34247071381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60937570 + ... + 60938131.

It is an arithmetic number, because the mean of its divisors is an integer number (8592236991).

Almost surely, 2^34247071981 is an apocalyptic number.

It is an amenable number.

34247071981 is a deficient number, since it is larger than the sum of its proper divisors (121875983).

34247071981 is a wasteful number, since it uses less digits than its factorization.

34247071981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121875982.

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 34247071981 in words is "thirty-four billion, two hundred forty-seven million, seventy-one thousand, nine hundred eighty-one".