83085144471331 has 4 divisors (see below), whose sum is σ = 83223389304664. Its totient is φ = 82946899638000.

The previous prime is 83085144471311. The next prime is 83085144471361. The reversal of 83085144471331 is 13317444158038.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83085144471331 is a prime.

It is a super-2 number, since 2×83085144471331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83085144471311) 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, 69122415765 + ... + 69122416966.

It is an arithmetic number, because the mean of its divisors is an integer number (20805847326166).

Almost surely, 2^{83085144471331} is an apocalyptic number.

83085144471331 is a deficient number, since it is larger than the sum of its proper divisors (138244833333).

83085144471331 is a wasteful number, since it uses less digits than its factorization.

83085144471331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138244833332.

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 83085144471331 in words is "eighty-three trillion, eighty-five billion, one hundred forty-four million, four hundred seventy-one thousand, three hundred thirty-one".