83134981 has 4 divisors (see below), whose sum is σ = 88025292. Its totient is φ = 78244672.

The previous prime is 83134979. The next prime is 83134993. The reversal of 83134981 is 18943138.

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 39125025 + 44009956 = 6255^2 + 6634^2 .

It is a cyclic number.

It is not a de Polignac number, because 83134981 - 2¹ = 83134979 is a prime.

It is a super-2 number, since 2×83134981² = 13822850131740722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83134981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83134951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2445130 + ... + 2445163.

It is an arithmetic number, because the mean of its divisors is an integer number (22006323).

Almost surely, 2^83134981 is an apocalyptic number.

It is an amenable number.

83134981 is a deficient number, since it is larger than the sum of its proper divisors (4890311).

83134981 is a wasteful number, since it uses less digits than its factorization.

83134981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4890310.

The product of its digits is 20736, while the sum is 37.

The square root of 83134981 is about 9117.8386144963. The cubic root of 83134981 is about 436.4434035982.

The spelling of 83134981 in words is "eighty-three million, one hundred thirty-four thousand, nine hundred eighty-one".