985388173131 has 16 divisors (see below), whose sum is σ = 1318421389824. Its totient is φ = 654640497504.

The previous prime is 985388173069. The next prime is 985388173157. The reversal of 985388173131 is 131371883589.

It is not a de Polignac number, because 985388173131 - 2¹⁰ = 985388172107 is a prime.

It is a super-2 number, since 2×985388173131² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (985388173171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19001820 + ... + 19053606.

It is an arithmetic number, because the mean of its divisors is an integer number (82401336864).

Almost surely, 2^985388173131 is an apocalyptic number.

985388173131 is a deficient number, since it is larger than the sum of its proper divisors (333033216693).

985388173131 is a wasteful number, since it uses less digits than its factorization.

985388173131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73730.

The product of its digits is 4354560, while the sum is 57.

The spelling of 985388173131 in words is "nine hundred eighty-five billion, three hundred eighty-eight million, one hundred seventy-three thousand, one hundred thirty-one".